Grizzly Peak (Sawatch Range)

Grizzly Peak (Sawatch Range)

Rising almost—but not quite—to Colorado’s famous 14,000-foot threshold, Grizzly Peak is one of the most remarkable thirteeners in the Sawatch Range. Current LiDAR-based Colorado peak lists place its summit at approximately 13,997 feet (4,266 meters), making it the highest ranked thirteener in Colorado.

That means only about three vertical feet separate Grizzly Peak from fourteener status.

Yet its importance goes far beyond that numerical curiosity.

Grizzly Peak has approximately 1,913 feet (583 meters) of topographic prominence, considerably more than many Colorado fourteeners. It rises directly along the Continental Divide, on the boundary between Chaffee and Pitkin counties, and overlooks the high country surrounding Independence Pass.

Its Nearest Higher Neighbor is La Plata Peak, while its prominence line parent is Mount Massive.

Grizzly is also one of the most geologically fascinating mountains in the entire Sawatch Range.

The mountain gives its name to the Grizzly Peak Tuff and sits within the type area of the enormous Grizzly Peak Caldera, created by a massive explosive volcanic eruption approximately 34 million years ago.

That makes Grizzly Peak dramatically different from many neighboring Sawatch summits built primarily from ancient Precambrian granite and metamorphic rock.

Today, the summit is reached by several mostly off-trail routes involving tundra, talus, loose volcanic rock, and Class 2 to Class 2+ scrambling. Its combination of near-fourteener elevation, substantial prominence, wild geology, Continental Divide setting, and relative solitude makes it one of Colorado’s most rewarding high thirteeners.

⚡ Fast Facts

Feature	Details
Country	United States
State	Colorado
Counties	Chaffee and Pitkin
Mountain Range	Sawatch Range
Subrange	Collegiate Peaks / La Plata–Grizzly area
Greater Range	Rocky Mountains
Protected Area	Collegiate Peaks Wilderness
National Forests	San Isabel National Forest / White River National Forest
Elevation	13,997 ft / 4,266 m
Peakbagger LiDAR Figure	13,995.3 ft / 4,265.8 m
Previous Map Elevation	13,988 ft
Prominence	Approx. 1,913 ft / 583 m
Isolation	Approx. 6.5–6.75 mi / 10.5–10.9 km
Nearest Higher Neighbor (NHN)	La Plata Peak
Line Parent	Mount Massive
Key Col	Independence Pass, approx. 12,084 ft
Coordinates	Approx. 39.0424° N, 106.5976° W
Mountain Type	Eroded volcanic-caldera mountain
Notable Rock Unit	Grizzly Peak Tuff
Volcanic?	Yes in origin; ancient and extinct
Caldera Age	Approx. 34 million years
First Recorded Ascent	Not reliably documented
Common Routes	East Ridge / South Ridge
Difficulty	Class 2 to Class 2+
Colorado Rank	Approx. #54
Colorado Thirteener Rank	#1 ranked thirteener
Best General Season	July through September

🐻 Grizzly Peak or “Grizzly Peak A”?

Colorado contains numerous mountains named Grizzly Peak.

To avoid confusion, peakbaggers often call the Sawatch Range summit:

Grizzly Peak A

The letter is not part of the official geographic name.

It is an informal identifier used by climbers and peak databases to distinguish this mountain from other Grizzly Peaks around Colorado, including summits near:

• Loveland Pass
• Taylor Park
• The San Juan Mountains
• Other Rocky Mountain locations

The official summit discussed here is simply:

Grizzly Peak

Its location near Independence Pass and La Plata Peak makes “Grizzly Peak (Sawatch Range)” the clearest descriptive title.

📏 Is Grizzly Peak 13,997 or 13,995 Feet?

Modern elevation sources differ slightly.

Lists of John and 14ers.com currently use a LiDAR elevation of:

13,997 feet

Peakbagger’s current NAVD88 LiDAR dataset gives:

13,995.3 feet

Older USGS mapping listed:

13,988 feet

The differences are very small and can result from:

• Different LiDAR processing
• Summit-point selection
• Vertical datum treatment
• Rounding

For Colorado peak ranking purposes, 13,997 feet has become the commonly used current figure.

The discrepancy does not change the mountain’s status.

Even at the highest modern measurement, Grizzly remains just below 14,000 feet.

🏆 Colorado’s Highest Ranked Thirteener

Grizzly Peak currently ranks:

#54 among Colorado’s ranked high summits

and:

#1 among Colorado’s ranked thirteeners

using modern LiDAR measurements.

That creates one of Colorado peakbagging’s most interesting statistics.

The mountain falls only about:

3 feet

short of the traditional 14,000-foot threshold.

If Grizzly were only slightly higher, it would join Colorado’s famous fourteeners.

Instead, it leads the thirteeners.

There are technically higher sub-14,000-foot points in Colorado, including minor subsidiary formations, but Grizzly is the highest summit meeting the usual prominence standard for an independently ranked peak.

📐 Prominence

Grizzly Peak has approximately:

1,913 feet / 583 meters

of topographic prominence.

Peakbagger’s slightly different LiDAR interpretation gives about:

1,911.5 feet.

Either figure makes Grizzly a highly independent mountain.

Its key saddle lies around Independence Pass, approximately:

12,084 feet / 3,683 meters

above sea level.

A climber traveling from Grizzly toward any higher mountain must therefore descend nearly 2,000 vertical feet before reaching terrain connected to a higher summit.

That is much greater prominence than many Colorado fourteeners possess.

🧭 Nearest Higher Neighbor: La Plata Peak

Grizzly Peak’s Nearest Higher Neighbor is La Plata Peak.

La Plata rises east of Grizzly to more than:

14,340 feet

using current elevation measurements.

The two mountains occupy the same general section of the Sawatch Range near Independence Pass.

Grizzly’s topographic isolation is approximately:

6.5–6.75 miles / 10.5–10.9 kilometers

depending on the dataset.

That means no terrain higher than Grizzly appears for more than six miles.

For a mountain surrounded by some of Colorado’s highest peaks, that is considerable independence.

🧭 Line Parent: Mount Massive

Grizzly Peak’s prominence line parent is Mount Massive.

Mount Massive rises north of Grizzly and reaches approximately:

14,428 feet

making it Colorado’s second-highest mountain.

The difference between NHN and line parent is worth noting.

The Nearest Higher Neighbor is simply the closest higher terrain.

The line parent is determined by following Grizzly’s key-col relationship along the hierarchy of increasingly prominent peaks.

For Grizzly:

NHN: La Plata Peak
Line parent: Mount Massive

🌎 The Continental Divide

Grizzly Peak rises directly on the Continental Divide of the Americas.

The summit also forms part of the boundary between:

• Chaffee County
• Pitkin County

Water falling on opposite sides of the summit begins completely different journeys.

💧 Eastern Drainage

Water flows toward tributaries of the:

Arkansas River → Mississippi River → Gulf of Mexico

💧 Western Drainage

Water flows toward:

Roaring Fork River → Colorado River → Pacific drainage

Two snowflakes landing only yards apart near the summit may eventually travel toward completely different sides of North America.

🗺️ Where Is Grizzly Peak?

Grizzly Peak lies in central Colorado near Independence Pass, between the upper Arkansas Valley and Aspen.

It sits southwest of La Plata Peak and southeast of the Aspen area.

Nearby geographical features include:

• Independence Pass
• Lincoln Creek
• Grizzly Reservoir
• McNasser Gulch
• Garfield Peak
• Red Mountain
• Truro Peak
• La Plata Peak

The summit stands within the Collegiate Peaks Wilderness, one of Colorado’s largest and highest wilderness areas.

Unlike some nearby fourteeners, Grizzly receives relatively little casual hiking traffic.

There is no maintained recreational trail all the way to the summit.

⛰️ The Sawatch Range

Grizzly Peak belongs to the Sawatch Range, the highest mountain range in Colorado.

The Sawatch contains an extraordinary concentration of major summits, including:

• Mount Elbert
• Mount Massive
• Mount Harvard
• La Plata Peak
• Mount Antero
• Mount Princeton
• Mount Yale

Mount Elbert reaches roughly 14,440 feet and is the highest summit in both Colorado and the entire Rocky Mountain system.

Grizzly sits among these giants but has a geological story very different from most of them.

🌋 Grizzly Peak’s Extraordinary Geology

The old version of this profile described Grizzly Peak primarily as a mountain of ancient granite and gneiss.

That misses the feature that makes the mountain geologically exceptional.

Grizzly Peak is the type locality for the Grizzly Peak Tuff and sits within the enormous Grizzly Peak Caldera.

The mountain’s geology records a massive volcanic eruption approximately:

34 million years ago

during the Oligocene Epoch.

This makes Grizzly one of the most important volcanic landmarks in the central Sawatch Range.

💥 The Grizzly Peak Caldera

Geologists have mapped the Grizzly Peak Caldera as an enormous collapsed volcanic structure roughly:

17 by 23 kilometers

in size.

It extends through a large portion of the mountains south of Independence Pass.

The caldera formed after an enormous explosive eruption emptied part of a large underground magma chamber.

When the chamber lost support, the overlying ground collapsed.

The result was a giant depression known as a:

caldera

This is the same general process responsible for famous volcanic calderas around the world—though Grizzly Peak’s system is vastly older and deeply eroded.

🌋 A 34-Million-Year-Old Supereruption-Scale Event

The eruption that created the Grizzly Peak Tuff released an immense quantity of material.

Geological studies estimate that the caldera contains more than:

600 cubic kilometers

of intracaldera volcanic material.

That figure does not necessarily represent a simple one-to-one measure of erupted volume, but it demonstrates the enormous scale of the volcanic system.

Huge pyroclastic flows swept across the landscape.

Hot ash and volcanic fragments accumulated in and around the collapsing caldera.

Inside the depression, volcanic deposits became exceptionally thick.

In places, preserved caldera-fill tuff exceeds:

2.7 kilometers

in thickness.

🪨 Grizzly Peak Tuff

The principal volcanic unit is called the:

Grizzly Peak Tuff

The U.S. Geological Survey formally designated exposures on and around Grizzly Peak as the unit’s type area.

Tuff forms when volcanic ash and other eruptive material become consolidated into rock.

Much of the Grizzly Peak Tuff originated from extremely hot ash flows, also called pyroclastic density currents.

These fast-moving mixtures of:

• Ash
• Gas
• Pumice
• Rock fragments

can travel enormous distances during explosive eruptions.

When hot deposits settle, particles may weld together.

The resulting rock is called welded tuff.

🎨 A Compositionally Zoned Eruption

Grizzly Peak Tuff is especially interesting because its chemistry changes vertically through the deposit.

Studies show a progression broadly ranging from:

high-silica rhyolite near the base

toward:

quartz-latite compositions higher in the sequence.

This chemical zoning tells geologists something remarkable.

The magma chamber itself appears to have been compositionally layered before eruption.

As the eruption progressed, magma from different levels of the chamber reached the surface.

Grizzly Peak therefore preserves evidence not only of an eruption but of the internal architecture of an ancient magma reservoir.

🌋 Caldera Resurgence

Volcanic activity continued after the main collapse.

The floor of the Grizzly Peak Caldera later resurged.

Resurgence happens when:

• Magma rises beneath a collapsed caldera
• The caldera floor is pushed upward
• New intrusions enter the crust
• Faults deform the earlier volcanic deposits

This process created additional structures inside the Grizzly Peak volcanic complex.

Millions of years of erosion subsequently exposed portions of these rocks.

Today’s mountain landscape is therefore essentially a cross-section through an extinct volcanic system.

❌ Is Grizzly Peak an Active Volcano?

No.

Grizzly Peak’s volcanic system has been extinct for tens of millions of years.

The volcano or volcanoes that created the Grizzly Peak Caldera no longer exist as recognizable cones.

What hikers see today is an erosional remnant of an ancient volcanic complex.

The mountain has been altered by:

• Uplift
• Faulting
• Erosion
• Glaciation
• Freeze-thaw weathering

for roughly 34 million years since the major eruption.

🏔️ A Volcanic Island in a Granite Range

One reason Grizzly Peak is so geologically fascinating is the contrast with much of the Sawatch Range.

Many major Sawatch mountains expose rocks more than:

1.4 billion years old.

These include ancient:

• Granite
• Gneiss
• Metamorphic rock

Grizzly Peak’s major volcanic episode occurred only about:

34 million years ago.

That makes portions of its geology more than a billion years younger than the basement rocks forming some neighboring mountains.

The Sawatch Range is therefore not geologically uniform.

It records several completely different episodes in Colorado’s geological history.

🌎 Building the Modern Sawatch Range

The modern Sawatch Mountains rose primarily through regional uplift connected to the building of the Rocky Mountains.

Later tectonic extension helped create the upper Arkansas Valley and the northern Rio Grande Rift system.

The landscape around Grizzly was therefore affected by several major processes:

1. Ancient crust formation
2. Rocky Mountain uplift
3. Oligocene volcanism
4. Grizzly Peak caldera collapse
5. Later faulting and uplift
6. Ice Age glaciation
7. Modern erosion

The summit visible today is the product of all these events rather than one single mountain-building episode.

🧊 Glaciers Reshaped the Caldera

The Grizzly Peak volcanic landscape was already millions of years old when Ice Age glaciers arrived.

During the Pleistocene, glaciers occupied high valleys and cirques across the Sawatch Range.

Ice carved and reshaped the older volcanic terrain.

Evidence includes:

• U-shaped valleys
• Cirques
• Moraines
• Glacial basins
• Talus-covered headwalls

The valleys around Lincoln Creek and Grizzly Reservoir preserve this more recent chapter of mountain development.

🪨 Why the Upper Mountain Is So Rocky

The summit region contains enormous areas of:

• Talus
• Scree
• Broken volcanic rock
• Rubble

This is partly the result of freeze-thaw weathering.

Water enters fractures.

At night or during cold weather, the water freezes.

Ice expands.

Repeated freezing and thawing gradually wedges the rock apart.

Gravity then pulls the fragments downhill.

For hikers, this creates the loose footing characteristic of Grizzly’s upper routes.

🏆 First Recorded Ascent

A reliable first-ascent record for Grizzly Peak has not been established.

The Independence Pass area experienced considerable:

• Mining
• Surveying
• Exploration
• Geological fieldwork

during the nineteenth and early twentieth centuries.

The mountain’s moderate technical difficulty makes an early undocumented ascent very likely.

Without a dependable historical source naming the first summit party, the appropriate listing is:

First recorded ascent: Unknown

This is more accurate than inventing or repeating an unsupported climbing date.

🥾 Climbing Grizzly Peak

Grizzly Peak is not technically extreme under dry summer conditions.

The usual routes fall around:

Class 2 to Class 2+

But this should not be confused with a maintained hiking trail.

Most summit routes involve:

• Off-trail navigation
• Steep tundra
• Talus
• Loose volcanic rock
• Scrambling
• Route-finding

The mountain’s remoteness and relatively low traffic make navigation more important than on popular fourteeners.

🥾 East Ridge Route

A frequently used eastern approach reaches Grizzly from the McNasser Gulch side.

Current 14ers.com statistics list the East Ridge at approximately:

• 6 miles round trip
• 2,800 feet of elevation gain
• Difficult Class 2

The route is also rated as having:

• Considerable exposure
• Considerable rockfall potential
• Considerable route-finding
• Moderate commitment

That combination illustrates why a Class 2 label should never be interpreted as “easy.”

Most of the movement may not require technical climbing, but steep loose terrain can still create serious consequences.

🥾 South Ridge Route

Another excellent option approaches from the Grizzly Reservoir / Lincoln Creek side.

This route follows the mountain’s southern ridge.

A representative itinerary is approximately:

10.8 miles round trip

with:

3,790 feet of elevation gain

and a difficulty of:

Class 2+

The route can also be combined with neighboring Garfield Peak.

The approach begins near Grizzly Reservoir at roughly 10,570 feet.

🚙 Lincoln Creek Road

Access to Grizzly Reservoir uses the long Lincoln Creek Road from the west side of Independence Pass.

The upper road is rough.

Current climbing guides recommend:

high-clearance four-wheel drive

for reaching the reservoir trailhead.

Drivers can encounter:

• Potholes
• Rock slabs
• Rough surfaces
• Seasonal water damage
• Snow
• Avalanche debris

Road conditions change from year to year.

Passenger cars generally need to stop much farther down the road, which can add substantial hiking distance.

Always check current conditions before assuming that an old trip report accurately describes vehicle access.

🥾 No Easy Independence Pass Summit Trail

The old Grizzly Peak profile described a straightforward seven-mile “standard route” directly from Independence Pass.

That is misleading.

Independence Pass is extremely close to the mountain geographically and forms Grizzly’s key col, but there is not a simple maintained summit trail directly from the highway to Grizzly Peak.

Long ridge traverses from the pass are possible for experienced hikers.

The better-established summit approaches generally use:

• McNasser Gulch
• Lincoln Creek / Grizzly Reservoir
• Longer Continental Divide ridge combinations

Hikers should plan from an actual route description rather than assuming the paved pass provides a simple summit path.

⛰️ Grizzly Peak and Garfield Peak

Garfield Peak rises immediately south of Grizzly.

Its current LiDAR elevation is approximately:

13,778 feet.

The summits are connected by a rugged ridge.

Peakbaggers frequently combine the two.

The traverse introduces more difficult scrambling than Grizzly alone, with current route descriptions reaching approximately:

Class 3

and involving:

• Considerable exposure
• High rockfall potential
• Significant route-finding

Climbing Grizzly does not require adding Garfield.

Only hikers comfortable with exposed scrambling should continue along the connecting ridge.

🌩️ Afternoon Thunderstorms

Like almost every high Colorado mountain, Grizzly Peak is vulnerable to summer thunderstorms.

The risk is especially important because:

• Much of the route is above treeline.
• The summit lies on the Continental Divide.
• Retreat can require considerable time.
• There is little shelter on the ridges.

July and August thunderstorms may produce:

• Lightning
• Hail
• Heavy rain
• Strong wind
• Sudden temperature drops

Start early.

Plan to descend exposed ridges before the usual afternoon storm cycle develops.

⚡ Lightning on the Divide

The Continental Divide is an especially poor place to be during a thunderstorm.

If thunder is audible, lightning is already close enough to pose a danger.

Do not wait on the summit for a storm to “pass nearby.”

Descending before conditions deteriorate is the safer strategy.

A mountain only three feet below 14,000 is just as exposed to lightning as a fourteener.

❄️ Snow

Snow can remain on Grizzly Peak into early summer.

The mountain also accumulates substantial winter snow.

Snow may transform ordinary Class 2 terrain into:

• Steep snow climbing
• Avalanche terrain
• Corniced ridges
• Icy traverses

Spring and winter routes require different equipment and judgment from dry summer hiking.

Depending on conditions, climbers may need:

• Crampons
• Microspikes
• Ice axe
• Avalanche rescue gear

Never assume that a summer route grade applies to snow-covered conditions.

📅 Best Time to Climb

The most reliable period for largely snow-free hiking is generally:

July through September

🌨️ June

Snow often remains in gullies, basins, and high slopes.

🌼 July

Routes usually begin drying substantially.

Wildflowers bloom below the summit.

Thunderstorm risk increases.

☀️ August

Often provides excellent dry-route conditions.

Afternoon storms remain common.

🍂 September

Cooler mornings and generally reduced monsoon activity can create excellent climbing.

Days become shorter, and early snow becomes possible.

❄️ October Through May

Expect winter or transitional mountaineering conditions.

🏞️ Collegiate Peaks Wilderness

Grizzly Peak lies within the Collegiate Peaks Wilderness.

Congress designated the wilderness in 1980.

It now protects roughly:

167,000 acres

across the central Sawatch Range.

The wilderness contains several of Colorado’s highest mountains and has an exceptionally high average elevation.

Its landscape includes:

• Fourteeners
• Thirteeners
• Glacial valleys
• Alpine lakes
• Forest
• Tundra
• Continental Divide ridges

Motorized and mechanized travel is prohibited within designated wilderness.

That means:

• No motor vehicles
• No bicycles
• No motorized equipment

within the wilderness boundary.

🔥 Current Wilderness Rules

Visitors should check current Forest Service regulations before a trip.

Current Collegiate Peaks Wilderness rules include restrictions intended to protect the landscape.

Among them:

• Dogs must be physically restrained by leash, with limited exceptions.
• Camping is prohibited within 100 feet of lakes, streams, and National Forest System trails.
• Campfires are prohibited above 11,000 feet.
• Group-size limits apply.

These rules can change, so verify the current Forest Service order before an overnight trip.

🌿 Flora and Fauna

Grizzly Peak rises through several high-elevation ecosystems.

Lower approach valleys can contain:

• Lodgepole pine
• Aspen
• Engelmann spruce
• Subalpine fir
• Willow

Higher slopes transition to:

• Krummholz
• Alpine tundra
• Talus
• Bare rock

The summit lies more than 2,000 feet above the approximate regional treeline.

Only the most specialized plants and animals can survive there.

🌲 Engelmann Spruce and Subalpine Fir

High forests surrounding the mountain contain Engelmann spruce and subalpine fir.

These trees are adapted to:

• Long snowy winters
• Cold temperatures
• Short growing seasons
• High elevations

As the forest approaches treeline, trees become smaller and increasingly distorted by wind.

Eventually they form low mats of krummholz.

Beyond this transition, trees disappear.

🌳 Aspen

Lower, sunnier slopes can support quaking aspen.

Aspen groves are particularly conspicuous in autumn.

Leaves change from green to brilliant:

• Gold
• Yellow
• Orange

Aspen forests also support rich understory vegetation and provide habitat for numerous birds and mammals.

🌿 Willow Wetlands

Willows occur along:

• Streams
• Wet meadows
• Alpine drainage corridors

These communities provide important habitat for wildlife.

They also stabilize streambanks and help retain water within mountain valleys.

Hikers crossing wet areas should avoid creating unnecessary new tracks.

High-elevation soils can recover very slowly from repeated trampling.

🌼 Alpine Wildflowers

The short summer growing season produces colorful wildflowers.

Plants found in the broader Sawatch alpine environment can include:

• Colorado blue columbine
• Alpine forget-me-not
• Paintbrush
• Sky pilot
• Alpine avens
• Moss campion
• Cinquefoil

Many grow only inches high.

Their low profile protects them from wind and helps trap heat near the ground.

Flowering must happen quickly before frost and snow return.

🌱 Alpine Tundra

Much of Grizzly’s upper mountain is alpine tundra.

Colorado treeline typically occurs around:

11,500 feet

depending on slope and exposure.

Grizzly rises roughly 2,500 feet higher.

Tundra plants must survive:

• Intense ultraviolet radiation
• Strong wind
• Freezing nights
• Thin soils
• Very short summers

Although the vegetation looks hardy, it is easily damaged.

Whenever possible, hikers should travel on:

• Existing routes
• Rock
• Talus
• Gravel

rather than fragile living tundra.

🐿️ American Pika

The American pika is one of the signature mammals of Grizzly Peak’s rocky slopes.

Pikas are relatives of rabbits and hares.

They live primarily among alpine and subalpine talus.

Unlike many mountain mammals, pikas do not hibernate.

Instead, they spend summer collecting vegetation and storing it beneath rocks in large hay piles.

These stored plants provide food through winter.

Their high-pitched calls often reveal their presence before hikers spot them.

🐿️ Yellow-Bellied Marmot

Yellow-bellied marmots inhabit high meadows and rocky slopes.

Marmots spend the brief mountain summer eating heavily.

They then hibernate for much of the year.

Visitors may see them:

• Sunbathing on rocks
• Feeding near meadows
• Whistling warnings

Never feed marmots.

Human food can change wildlife behavior and create long-term problems.

🐦 White-Tailed Ptarmigan

The white-tailed ptarmigan is one of Colorado’s most specialized alpine birds.

It spends its entire life in high mountain terrain.

Its feathers change seasonally.

Summer birds are mottled brown and gray.

Winter birds become nearly pure white.

This exceptional camouflage makes ptarmigan surprisingly difficult to see.

The high tundra surrounding Grizzly provides suitable habitat.

🐦 Brown-Capped Rosy-Finch

Another alpine specialist is the brown-capped rosy-finch.

These birds nest in rocky mountain environments and forage along:

• Snowfields
• Tundra
• Talus

Colorado contains roughly one-quarter of the alpine habitat remaining in the contiguous United States.

Protecting landscapes such as the Collegiate Peaks therefore has importance well beyond scenic recreation.

🐐 Mountain Goats

Mountain goats occur across parts of the Sawatch Range.

They use:

• Cliffs
• Alpine tundra
• High ridges
• Talus

Their specialized hooves allow remarkably secure movement over steep terrain.

Mountain goats were introduced to Colorado and are not native to the state.

Never feed or intentionally approach them.

🦌 Elk

Elk use lower forest and meadow habitats around the mountain.

During summer they may move into high-elevation basins to feed.

Winter usually pushes herds toward lower and less exposed terrain.

Wildlife habitat in the broader Sawatch landscape also supports:

• Mule deer
• Black bears
• Mountain lions
• Coyotes
• Smaller mammals

Most of these animals are much more likely below treeline than near Grizzly’s summit.

🐱 Canada Lynx

The wider central Sawatch landscape contains important Canada lynx habitat.

Forest Service planning documents identify high-quality lynx habitat in roadless terrain surrounding portions of the Collegiate Peaks.

Lynx are extraordinarily elusive.

They depend heavily on:

• Snowy conifer forests
• Landscape connectivity
• Snowshoe hare populations

A climber is extremely unlikely to encounter one.

Their presence nevertheless illustrates the ecological importance of protecting the lower forests surrounding the alpine peaks.

🌎 Climate Change and Alpine Habitat

High-altitude environments are particularly sensitive to warming.

Colorado Parks and Wildlife identifies alpine species such as:

• American pika
• White-tailed ptarmigan
• Brown-capped rosy-finch

as especially dependent on tundra habitats.

As temperatures rise, vegetation zones may gradually shift higher.

Alpine animals face an obvious limitation:

At some point, there is no higher terrain left.

Large protected areas such as the Collegiate Peaks Wilderness provide important continuous habitat where mountain ecosystems can respond as naturally as possible.

🌄 Summit Views

Grizzly Peak’s substantial prominence and Continental Divide position produce enormous views.

Major mountains visible from the summit can include:

• La Plata Peak
• Mount Elbert
• Mount Massive
• Garfield Peak
• Truro Peak
• Independence Pass peaks
• Elk Mountains toward Aspen

The contrast between the two sides of the Continental Divide is particularly striking.

To the east lie the upper Arkansas Valley and central Sawatch.

To the west, valleys descend toward Aspen and the Roaring Fork drainage.

⛰️ Nearby Mountains

La Plata Peak

La Plata Peak is Grizzly Peak’s Nearest Higher Neighbor.

It rises above 14,300 feet and ranks among Colorado’s highest mountains.

Garfield Peak

Garfield Peak rises immediately south of Grizzly to approximately 13,778 feet.

The ridge connecting the peaks is commonly climbed as a Class 3 extension.

Mount Massive

Mount Massive is Grizzly Peak’s line parent.

At approximately 14,428 feet, it is the second-highest mountain in Colorado.

Mount Elbert

Mount Elbert rises northeast of Grizzly and is the highest mountain in Colorado and the Rocky Mountains.

Red Mountain

Red Mountain rises south of Garfield Peak within the same volcanic-caldera landscape.

Its colorful rock reflects the complex volcanic and hydrothermal history of the area.

📊 Grizzly Peak vs. La Plata Peak

Feature	Grizzly Peak	La Plata Peak
Elevation	13,997 ft	~14,344 ft
Prominence	~1,913 ft	~1,830+ ft
Isolation	~6.5–6.75 mi	~6+ mi
Colorado Rank	~#54	~#5
Fourteener?	No	Yes
NHN	La Plata Peak	Higher Sawatch terrain
Typical Normal Difficulty	Class 2 / 2+	Class 2
Notable Geology	Oligocene caldera and tuff	Older crystalline rocks dominate

La Plata is more than 300 feet higher.

Grizzly actually rivals or exceeds it in some prominence datasets.

This shows how arbitrary the 14,000-foot distinction can be from a topographic perspective.

📊 Grizzly Peak vs. Colorado’s Lowest Fourteeners

Grizzly Peak sits astonishingly close to fourteener status.

Mountain	Approx. Elevation
Sunshine Peak	~14,007 ft
Huron Peak	~14,006 ft
Grizzly Peak	13,997 ft

Only around 10 vertical feet separate Grizzly from some of Colorado’s lowest ranked fourteeners.

From the standpoint of:

• Altitude
• Weather
• Exposure
• Alpine ecology

the difference is essentially meaningless.

The fourteener threshold is cultural rather than geological.

❓ Frequently Asked Questions

How high is Grizzly Peak in the Sawatch Range?

Current Colorado LiDAR lists generally use 13,997 feet (4,266 meters).

Peakbagger’s current precise NAVD88 dataset gives 13,995.3 feet.

Where is Grizzly Peak?

It is in the Sawatch Range of central Colorado, near Independence Pass and on the boundary between Chaffee and Pitkin counties.

Is this the Grizzly Peak near Loveland Pass?

No.

Colorado contains several mountains named Grizzly Peak.

The Loveland Pass summit belongs to the Front Range.

This article covers the much higher Sawatch Range Grizzly Peak near Independence Pass.

Why is it sometimes called Grizzly Peak A?

The “A” is an informal peakbagging identifier used to distinguish it from Colorado’s numerous other Grizzly Peaks.

It is not part of the official geographic name.

Is Grizzly Peak a fourteener?

No.

Its modern LiDAR elevation is approximately 13,997 feet—only about three feet below 14,000.

Is Grizzly Peak the highest thirteener in Colorado?

It is currently the highest ranked Colorado thirteener under the usual summit-prominence criteria.

What is Grizzly Peak’s Nearest Higher Neighbor?

La Plata Peak.

What is Grizzly Peak’s line parent?

Mount Massive.

How prominent is Grizzly Peak?

Approximately 1,913 feet (583 meters).

How isolated is Grizzly Peak?

Approximately 6.5–6.75 miles, depending on the dataset.

What is Grizzly Peak’s key col?

Its key saddle is associated with Independence Pass, at approximately 12,084 feet.

Is Grizzly Peak volcanic?

Yes.

The mountain lies within the ancient Grizzly Peak Caldera and is the type locality for Grizzly Peak Tuff.

How old is the Grizzly Peak Caldera?

Approximately 34 million years.

Is the volcano active?

No.

The volcanic system is extinct and deeply eroded.

Was Grizzly Peak formed by the same geology as most Sawatch fourteeners?

Not entirely.

Its Oligocene volcanic geology differs substantially from the ancient Precambrian crystalline rocks dominating many other Sawatch summits.

Who first climbed Grizzly Peak?

A reliable first-ascent record has not been established.

How difficult is Grizzly Peak?

Common summer routes are approximately Class 2 to Class 2+.

They involve substantial off-trail navigation and loose rock.

What is the shortest commonly described route?

The East Ridge route from the McNasser Gulch side is listed around 6 miles round trip with 2,800 feet of gain.

What is the Grizzly Reservoir route like?

The South Ridge route from the Grizzly Reservoir area is approximately 10.8 miles round trip with 3,790 feet of elevation gain and is rated Class 2+.

Do you need four-wheel drive?

The upper Lincoln Creek Road to Grizzly Reservoir generally requires a high-clearance 4WD vehicle.

Road conditions change, so check before traveling.

Can Grizzly Peak be combined with Garfield Peak?

Yes.

The ridge combination is popular among experienced peakbaggers, but it introduces approximately Class 3 scrambling and greater exposure.

What is the best season?

Generally July through September for the best chance of mostly snow-free terrain.

Do you need a permit?

There is generally no quota-style permit simply to day hike Grizzly Peak.

The mountain lies within designated wilderness, so Forest Service wilderness regulations apply.

Are dogs allowed?

Current Collegiate Peaks Wilderness regulations require dogs to be physically restrained by a leash, with limited working or hunting exceptions.

⭐ Why Grizzly Peak Is Special

Grizzly Peak may be the clearest example in Colorado of how arbitrary mountain categories can be.

At approximately 13,997 feet, it misses fourteener status by only a few feet.

If the mountain were the height of a one-story building taller, it would appear on every standard list of Colorado fourteeners.

Instead, it leads the thirteeners.

But focusing only on that statistic misses what makes Grizzly truly unusual.

The mountain has almost 1,900 feet of prominence.

Higher terrain does not appear for more than six miles.

Its summit marks the Continental Divide between waters flowing toward the Arkansas and Mississippi rivers on one side and the Colorado River system on the other.

Then there is the geology.

Thirty-four million years ago, this peaceful alpine landscape was the site of an enormous volcanic event.

A huge magma chamber fed explosive eruptions.

Pyroclastic flows buried the surrounding country in hot ash and debris.

The ground collapsed into a caldera approximately 17 by 23 kilometers across.

Hundreds of cubic kilometers of volcanic material accumulated inside it.

Later, the caldera floor rose again as magma pushed upward from below.

Then the volcano died.

Erosion began dismantling it.

Glaciers carved its valleys.

Freeze-thaw cycles shattered its cliffs.

What remains today is not the original volcano but a mountain landscape exposing the internal structure of an extinct volcanic system.

The Grizzly Peak Tuff is so important that geologists use exposures on and around the mountain as its formal type area.

Few Colorado summits can claim that distinction.

Today, hikers climb through a completely different environment.

Spruce and fir forests grow in lower valleys. Aspen and willow occupy wetter slopes. Above treeline, tundra flowers bloom during a growing season lasting only weeks.

Pika call from the talus.

Ptarmigan disappear against the rocks.

Mountain goats cross distant ridges.

And from the summit, some of the highest mountains in the Rocky Mountains fill the horizon.

Grizzly Peak is therefore much more than the mountain that missed becoming a fourteener by three feet.

It is Colorado’s highest ranked thirteener, a highly prominent Continental Divide summit, the centerpiece of a 34-million-year-old volcanic caldera, and one of the most geologically distinctive mountains in the Sawatch Range.

🔗 Related Articles

• Sawatch Range
• La Plata Peak
• Mount Massive
• Mount Elbert
• The 10 Highest Peaks in Colorado
• The Rocky Mountains
• What Is Mountain Prominence?

📚 Sources

• 14ers.com — Grizzly Peak
• Lists of John — Grizzly Peak
• Peakbagger — Grizzly Peak
• Climb13ers — Grizzly Peak South Ridge
• U.S. Geological Survey — Grizzly Peak Tuff
• U.S. Geological Survey — Grizzly Peak Tuff References and Caldera Geology
• U.S. Geological Survey — Geologic Map of the Collegiate Peaks Wilderness and Grizzly Peak Caldera
• U.S. Forest Service — Collegiate Peaks Wilderness Regulations
• U.S. Forest Service — Collegiate Peaks Wilderness
• Colorado Parks and Wildlife — Alpine Habitats
• Colorado Parks and Wildlife — American Pika