Mount Zion (Lake County, Colorado)

Looking out towards Lake Dillon and the Gore Range beyond from Swan Mountain in Summit County, Colorado on a clear summer day. | Joey Reuteman

Rising immediately north of Leadville in central Colorado, Mount Zion is a 12,126-foot (3,696-meter) summit on the southern portion of Chicago Ridge, near the northern end of the Mosquito Range and the boundary between the Tenmile-Mosquito high country and the upper Arkansas River Valley.

Mount Zion is easy to overlook beside Colorado’s famous fourteeners. Mount Elbert, the highest mountain in Colorado, towers across the valley to the southwest. Mount Massive rises nearby, while higher Mosquito Range peaks dominate the skyline to the east.

Yet Mount Zion has several features that make it unusually interesting.

The summit stands within the historic Leadville mining region, where nineteenth-century geologists identified a distinctive intrusive igneous rock that became known as Mount Zion Porphyry. The mountain is also accessible by a network of old forest and mining roads, making it a relatively approachable high-elevation summit when snow has melted and road conditions permit.

Its Nearest Higher Neighbor is Buckeye Peak, which rises farther north along the same general mountain system.

Mount Zion’s topographic prominence is modest—about 250 feet (76 meters)—because it forms part of a long elevated ridge rather than an isolated mountain mass. Its value lies less in numerical dominance than in its exceptional views over Leadville, Turquoise Lake, the Sawatch Range, Mosquito Range, and the surrounding high country.

⚡ Fast Facts

Feature	Details
Country	United States
State	Colorado
County	Lake County
Nearest City	Leadville
Mountain Group	Chicago Ridge / Tenmile-Mosquito Mountains
Broader Range	Mosquito Range / Southern Rocky Mountains
Protected Land	San Isabel National Forest
Ranger District	Leadville Ranger District
Elevation	Approx. 12,126 ft / 3,696 m
Alternate Published Elevation	Approx. 12,131–12,133 ft
Prominence	Approx. 250 ft / 76 m
Isolation	Approx. 1.56 mi / 2.51 km
Nearest Higher Neighbor (NHN)	Buckeye Peak
Coordinates	Approx. 39.31138° N, 106.27502° W
USGS Quadrangle	Leadville North
Mountain Type	High ridge summit / erosional Rocky Mountain peak
Notable Rock Unit	Mount Zion Porphyry
Volcanic?	No
First Recorded Ascent	Unknown
Common Access	Forest Roads 109 and 189
Best General Hiking Season	July through September
Notable Distinction	Type locality of Mount Zion Porphyry

📍 Where Is Mount Zion?

Mount Zion lies approximately four miles north of Leadville, one of the highest incorporated cities in the United States.

The mountain rises east of U.S. Highway 24 and northeast of Turquoise Lake.

It occupies the southern portion of an upland ridge system that continues north toward:

Buckeye Peak
Chicago Ridge
Tennessee Pass
Ski Cooper

Across the upper Arkansas River Valley to the west rises the enormous Sawatch Range, including:

To the east lie the higher summits of the Mosquito Range, including Mount Arkansas and numerous thirteeners.

This position gives Mount Zion excellent views despite its modest prominence.

🏔️ Mount Zion and Chicago Ridge

Mount Zion forms the southern summit area of Chicago Ridge.

Chicago Ridge extends northward toward Tennessee Pass and Ski Cooper.

The ridge is broad rather than sharply defined, and several high points rise along its length.

That geography explains why Mount Zion has only about 250 feet of prominence despite reaching more than 12,000 feet above sea level.

The surrounding terrain is already very high.

Nearby ridges and saddles remain well above 11,000 feet.

Mount Zion is therefore best thought of as a named summit on a larger elevated mountain ridge rather than a deeply separated standalone massif.

⚠️ Not the Mount Zion Near Golden

Colorado has more than one feature called Mount Zion.

The best-known namesake lies near Golden, Colorado, west of Denver.

That Mount Zion reaches only about 7,060 feet and is associated with Lookout Mountain, Windy Saddle Park, and the Colorado School of Mines “M.”

This article concerns the entirely different:

Mount Zion in Lake County near Leadville.

The Lake County summit is approximately 5,000 feet higher.

When searching maps, trail reports, or weather information, always include Lake County or Leadville to avoid confusion.

📏 Elevation

The USGS geographic location for Mount Zion gives an elevation of approximately:

12,126 feet / 3,696 meters

Other mapping services round the summit slightly differently, producing figures such as:

12,131 ft
12,132 ft
12,133 ft

These small variations are normal.

They can result from:

Different vertical datums
Contour interpretation
Digital elevation models
Rounding

For general use, 12,126 feet is the most conservative USGS-linked figure.

📐 Prominence

Mount Zion has approximately:

250 feet / 76 meters of topographic prominence.

That means the summit rises only about 250 vertical feet above the highest saddle connecting it to higher terrain.

This is a relatively small amount of prominence.

Under the common Colorado peak-ranking convention requiring 300 feet of prominence, Mount Zion would not normally qualify as a ranked independent summit.

That does not mean the mountain is insignificant.

Prominence measures topographic independence—not elevation, scenery, hiking value, or geological interest.

Mount Zion still rises more than 12,000 feet above sea level.

🧭 Nearest Higher Neighbor: Buckeye Peak

Mount Zion’s Nearest Higher Neighbor is Buckeye Peak.

Buckeye Peak rises to approximately:

12,873 feet / 3,924 meters

north-northeast of Mount Zion.

The two summits are connected by high ridges and intermediate terrain.

Buckeye Peak is much more prominent, rising more than 1,500 feet above its key saddle.

Mount Zion’s isolation is approximately:

1.56 miles / 2.51 kilometers.

That means higher terrain occurs fairly quickly when traveling north from the summit.

📊 Mount Zion vs. Buckeye Peak

Feature	Mount Zion	Buckeye Peak
Elevation	12,126 ft	~12,873 ft
Prominence	~250 ft	~1,552 ft
Isolation	~1.56 mi	~3.83 mi
NHN	Buckeye Peak	Higher Mosquito Range terrain
Location	Southern Chicago Ridge	North of Mount Zion
Typical Character	Broad ridge summit	More independent mountain
Access	Forest-road approach	Longer ridge/off-trail approach

Although only a few miles apart, the two summits have very different topographic personalities.

Buckeye is the dominant mountain.

Mount Zion forms part of the approach ridge leading toward it.

🪨 Geology of Mount Zion

Mount Zion’s geology is one of the best reasons the mountain deserves its own profile.

The summit lies within the historic Leadville mining district, one of the most intensively studied geological regions in Colorado.

Nineteenth-century U.S. Geological Survey geologists identified a distinctive intrusive rock here and named it:

Mount Zion Porphyry

after the mountain.

The rock became part of the complicated family of porphyries associated with the Leadville district.

🪨 Mount Zion Porphyry

Early geological descriptions characterize fresh Mount Zion Porphyry as a gray, fine-grained granite-like rock.

Its primary minerals include:

Quartz
Feldspar
Mica

Orthoclase is an important feldspar component.

Biotite occurs as a dark mica.

Accessory minerals identified microscopically include:

Zircon
Magnetite
Apatite

Larger quartz and feldspar crystals can occur within the finer-grained matrix, producing the characteristic porphyritic texture.

The rock can weather and alter dramatically.

Some altered exposures become much lighter in color as feldspar and biotite break down and secondary muscovite forms.

🔬 What Is Porphyry?

Porphyry describes an igneous texture rather than one exact rock composition.

A porphyritic rock contains relatively large crystals—called phenocrysts—within a finer-grained surrounding matrix.

That texture generally records magma that experienced more than one cooling environment.

Some crystals began growing while magma cooled slowly underground.

The remaining melt later cooled more rapidly.

At Mount Zion, quartz and feldspar may form conspicuous crystals within the finer surrounding rock.

🌋 Is Mount Zion a Volcano?

No.

Mount Zion is not a volcano.

Its porphyry is igneous, but it formed primarily from magma intruded into older rock below Earth’s surface.

This is an important distinction.

Igneous rocks can form either:

At Earth’s surface from lava
Underground from magma

The intrusive porphyries of the Leadville district belong mainly to the second category.

Later uplift and erosion exposed them.

⏳ How Old Is the Mount Zion Porphyry?

Modern geological mapping generally places the broader Gray Porphyry Group, which includes Mount Zion Porphyry, within the Paleocene to Eocene.

That means these rocks formed tens of millions of years ago during a period of intense mountain building and igneous activity in central Colorado.

The intrusions are associated broadly with the Laramide Orogeny, the tectonic episode responsible for raising much of the modern Rocky Mountain system.

This makes Mount Zion’s geology far younger than the ancient Precambrian basement rocks exposed in parts of the nearby Sawatch Range.

🌎 The Laramide Orogeny

The modern Rocky Mountains began rising during the Laramide Orogeny, approximately 70 to 40 million years ago.

Unlike a simple volcanic event, the Laramide involved enormous regional deformation.

The crust was:

Compressed
Faulted
Folded
Lifted

Magma also intruded through portions of the crust.

The porphyry bodies around Leadville formed within this complex tectonic environment.

Later erosion stripped away overlying rock and exposed the intrusive material.

Mount Zion therefore preserves evidence of both:

Rocky Mountain uplift
Deep igneous activity

🏔️ Mount Zion and the Mosquito Range

Mount Zion lies near the northwestern side of the Mosquito Range, within the broader Tenmile-Mosquito mountain system.

The Mosquito Range extends along the east side of the upper Arkansas River Valley.

Its highest peaks include:

Mount Lincoln
Quandary Peak in the broader Tenmile-Mosquito system
Mount Bross
Mount Democrat
Mount Sherman
Mount Arkansas

Mount Zion lies much lower than the major fourteeners.

Its geology, however, is directly connected with the same extraordinary mining and igneous history that made the Mosquito Range famous.

⛏️ Leadville Mining History

Mount Zion rises on the edge of one of North America’s most historically significant mining regions.

Leadville became internationally famous during the late nineteenth century after rich mineral deposits were discovered.

Mining focused heavily on:

Silver
Lead
Gold
Zinc

The geology was unusually complex.

Sedimentary rocks, faults, intrusive porphyries, hydrothermal fluids, and mineralized zones interacted to create major ore deposits.

Geologists studied the district extensively because understanding the rocks could help miners predict where valuable deposits might occur.

Mount Zion became part of this scientific story through the rock named after it.

🧪 Why the Porphyries Mattered to Miners

Porphyry intrusions were important clues in the Leadville mining district.

Magma moving through the crust could:

Fracture surrounding rock
Alter minerals
Heat groundwater
Generate hydrothermal fluids

Those fluids sometimes transported metals.

When conditions changed, metals could precipitate into veins or replacement deposits.

Not every porphyry body contained valuable ore.

But mapping intrusive rocks helped geologists reconstruct the underground geological history of the district.

That work made Leadville one of the classic early examples of economic geology in the American West.

🗺️ A Type Locality

Mount Zion has an unusual geological distinction:

It effectively serves as the type locality for Mount Zion Porphyry.

Early geologists found the rock particularly well exposed and comparatively unaltered on the mountain.

The unit was also identified on nearby Prospect Mountain.

Because Mount Zion provided characteristic examples, geologists used its name for the rock.

That means the mountain’s name appears not merely on topographic maps but in more than a century of geological literature.

For a relatively obscure Colorado twelve-thousander, that is an impressive scientific legacy.

🧊 Ice Age Landscape

Pleistocene glaciers also strongly affected the Leadville region.

During colder periods, glaciers descended from both the Sawatch and Mosquito mountain systems.

Ice occupied tributary valleys and helped reshape the upper Arkansas basin.

Glacial processes created or modified:

Broad valleys
Moraines
Basins
Lakes
Rounded ridges
Deposits of sand, gravel, and boulders

Mount Zion itself does not display the huge cirques found on Colorado’s highest peaks, but it stands within a landscape profoundly influenced by repeated glaciation.

🌊 Upper Arkansas River Valley

The Arkansas River begins in the high country near Leadville.

Mount Zion rises just east of the river’s upper valley.

Water draining from the mountain eventually enters the Arkansas system.

From Leadville, the river flows south through Colorado before turning east.

It ultimately joins the Mississippi River.

This means snow falling on Mount Zion eventually contributes to one of North America’s great river systems.

Across nearby continental-divide ridges, water can take a completely different path toward the Colorado River and the Pacific.

🥾 Hiking Mount Zion

Mount Zion is unusual because much of the approach follows an old Forest Service road rather than a conventional mountain footpath.

Forest Road 109 climbs from the U.S. 24 side of the mountain.

Higher routes connect with Forest Road 189 and continue north toward Buckeye Peak.

The summit itself sits slightly away from the main road corridor.

Hikers typically leave the road for a short off-trail section through:

Alpine grass
Loose rock
Talus

to reach the summit cairn.

🥾 Mount Zion Road Route

A commonly used Mount Zion outing follows the 4WD road north from near Leadville.

Depending on the exact starting point and turnaround, route descriptions give approximately:

8–8.5 miles round trip

with around:

2,100–2,200 feet of elevation gain.

The route initially climbs through forest.

Higher up, the trees thin and the road emerges into open high country.

The summit is not an obvious dramatic pyramid.

Instead, it appears as a broad high point on the ridge.

That can make navigation slightly confusing without a map.

🧭 Finding the Actual Summit

The forest road passes close to Mount Zion, but not directly over the exact summit.

The true high point is marked by a rock cairn a short distance away.

Reaching it requires leaving the road and crossing open alpine terrain and scattered talus.

This final portion is generally not technical in dry summer conditions.

However, hikers should carry an offline topographic map or GPS track because:

The summit is broad.
Several nearby high points look similar.
Roads branch in multiple directions.
Fog can erase visual landmarks quickly.

🚙 4WD Access

Mount Zion is also known as an off-road destination.

Forest Roads 109 and 189 provide access into the high mountain terrain.

The road can contain:

Steep grades
Loose rock
Erosion
Mud
Seasonal snow
Narrow sections

Conditions vary considerably from year to year.

A section that is easy after maintenance can become substantially rougher following heavy rain, snowmelt, or vehicle use.

High-clearance four-wheel drive is generally the safest assumption for upper road travel.

🚧 Seasonal Road Closures

Higher roads around Mount Zion are subject to seasonal motorized-use restrictions.

Forest Road 189 has historically remained closed until approximately June 30 to protect wet roads and natural resources while snow melts.

Exact openings can vary.

Snow may remain much later after heavy winters.

Anyone planning to drive rather than hike should check the current:

Forest Service Motor Vehicle Use Map
Leadville Ranger District notices
Road conditions
Temporary closures

before traveling.

A road appearing on a map does not guarantee that it is currently legal or physically possible to drive.

🥾 Mount Zion and Buckeye Peak

Strong hikers sometimes combine Mount Zion with Buckeye Peak.

A longer route connecting the two can reach approximately:

14 miles round trip

with more than:

3,500 feet of elevation gain.

The road continues north beyond Mount Zion before eventually ending below Buckeye Peak.

Reaching Buckeye’s summit then requires additional off-trail travel over scree and talus.

For hikers seeking a longer high-country day, the combination provides a logical progression:

Mount Zion
High connecting road/ridge
Buckeye Peak

Mount Zion alone is considerably shorter.

⚠️ High Altitude

The technical hiking may be straightforward, but Mount Zion’s summit sits above 12,000 feet.

Altitude can cause:

Headache
Nausea
Dizziness
Fatigue
Shortness of breath
Reduced coordination

Leadville itself sits above 10,000 feet, so visitors arriving from low elevation may already feel the effects before starting.

Spending time acclimatizing can improve comfort.

If symptoms worsen during the ascent, descending is the safest response.

🌩️ Thunderstorms

Summer thunderstorms are one of the mountain’s most important hazards.

The upper ridge has very little shelter.

Lightning can strike exposed terrain even before heavy rain begins.

Hikers should generally start early enough to complete the exposed portion before the normal afternoon thunderstorm cycle develops.

Watch for:

Growing cumulus clouds
Darkening skies
Thunder
Sudden gusty wind
Falling temperatures

If thunder is audible, the open summit is no longer a safe place to remain.

❄️ Winter Conditions

Winter transforms Mount Zion into a completely different outing.

Deep snow can cover:

Roads
Trail junctions
Signs
Talus

The surrounding high terrain may also contain avalanche slopes.

Snowmobile, skiing, snowshoeing, and other winter travel occur in the broader Tennessee Pass and Chicago Ridge area.

Winter visitors need appropriate:

Avalanche knowledge
Navigation
Cold-weather clothing
Traction
Emergency equipment

A straightforward summer road walk should not automatically be considered a safe winter route.

📅 Best Time to Visit

For ordinary hiking, the most reliable period is generally:

July through September.

🌱 Late June

Roads and trails may still be wet or snow-covered.

Seasonal road restrictions may remain in effect.

🌼 July

Snow progressively disappears.

Alpine wildflowers begin blooming.

Afternoon thunderstorms become common.

☀️ August

Usually one of the best months for mostly snow-free travel.

Lightning remains a major concern.

🍂 September

Cooler weather and clearer mornings can create excellent hiking conditions.

Early snowstorms become increasingly possible.

❄️ October Through May

Expect winter or transitional mountain conditions.

Road access may be limited and specialized winter skills may be required.

🌿 Flora and Fauna

Mount Zion passes through two major Rocky Mountain ecological environments:

Subalpine forest
Alpine tundra

Lower elevations around the approach support substantial conifer forest.

Near and above treeline, forest disappears and the mountain becomes an open landscape of tundra, talus, grass, and rock.

The surrounding Leadville Ranger District supports a diverse wildlife community despite its severe high-altitude climate.

🌲 Lodgepole Pine Forest

Lower portions of the Mount Zion approach pass through forests strongly influenced by lodgepole pine.

This tree is widespread around Leadville.

Lodgepole pine tolerates:

Cold winters
Short growing seasons
Relatively poor soils
Disturbance

Large areas of the surrounding forest have also been affected by mountain pine beetles.

Forest management projects near Mount Zion and Tennessee Creek have included thinning designed to improve:

Forest health
Fire resilience
Watershed conditions
Wildlife habitat

The changing forest is therefore both natural and actively managed.

🌲 Spruce and Fir

At higher elevations, cooler and wetter sites can support:

Engelmann spruce
Subalpine fir

These trees are adapted to deep winter snow and short summers.

Near treeline, severe wind and cold create krummholz.

Krummholz trees grow low, twisted, and distorted rather than developing ordinary upright trunks.

Above roughly 11,500–12,000 feet, tree growth becomes increasingly difficult.

Mount Zion’s summit lies well within the alpine zone.

🌼 Alpine Wildflowers

Summer brings a short but colorful growing season.

Plants in the Mount Zion and Chicago Ridge area can include:

Alpine grasses
Sedges
Mountain avens
Sky pilot
Parry’s bellflower
Alpine clover
Astragalus
Paintbrush
Low cushion plants

Botanical collections along Forest Road 109 have documented species such as:

Alpine milkvetch
American vetch
Parry’s bellflower
Collomia

Many alpine plants grow slowly.

Damage caused by footsteps or vehicle travel can take years or decades to recover.

Stay on roads and durable surfaces whenever possible.

🌱 Alpine Tundra

Above treeline, plants remain close to the ground.

This reduces exposure to:

Wind
Cold
Snow abrasion
Moisture loss

Alpine tundra may look tough because it survives extreme weather.

Ecologically, however, it is fragile.

The growing season can last only weeks.

Soils are thin.

Repeated vehicle or foot traffic can destroy vegetation much faster than it can regrow.

This is one reason seasonal road closures are important in the Mount Zion area.

🐿️ American Pika

American pikas inhabit rocky talus fields throughout Colorado’s high country.

They are small relatives of rabbits.

Pikas do not hibernate.

Instead, they spend summer collecting grasses and flowers and storing them beneath rocks as winter food.

Their sharp calls often reveal their presence before hikers see them.

The talus around Mount Zion and nearby higher ridges provides suitable habitat.

🐿️ Yellow-Bellied Marmot

Yellow-bellied marmots also occupy rocky alpine and subalpine terrain.

Unlike pikas, marmots hibernate.

They spend the short mountain summer feeding heavily and building fat reserves.

Marmots commonly sit on prominent rocks where they can watch for predators.

Never feed them.

Human food can dramatically alter their behavior.

🐏 Bighorn Sheep

The broader San Isabel National Forest supports Rocky Mountain bighorn sheep.

These animals are well adapted to:

Rocky slopes
Alpine meadows
Steep escape terrain

Bighorn sheep can move quickly over terrain that appears nearly impassable to humans.

Give them substantial space if encountered.

Wildlife should never have to alter its movement because a hiker is approaching for a photograph.

🐐 Mountain Goats

Mountain goats occur in parts of Colorado’s central high country.

They are not native to Colorado; wildlife agencies introduced them during the twentieth century.

They have nevertheless become strongly associated with high alpine terrain.

Their specialized hooves allow them to climb:

Cliffs
Talus
Steep rock

Mountain goats may seek salt from human urine, sweat, or gear, so never intentionally encourage close encounters.

🦌 Elk and Mule Deer

Forested and meadow environments around Mount Zion provide seasonal habitat for:

Elk
Mule deer

These animals generally spend less time on the exposed summit itself.

They are more likely to be encountered around:

Forest edges
Meadows
Lower road corridors
Creek drainages

Elk move extensively with the seasons.

Deep winter snow can push herds toward lower terrain.

🐱 Canada Lynx

The wider Tennessee Creek and Mount Zion forest landscape is managed partly with Canada lynx habitat in mind.

Lynx are extremely elusive.

They depend heavily on forest conditions supporting snowshoe hares, their principal prey.

Forest management in the region has included goals of maintaining and improving:

Winter foraging habitat
Denning habitat
Landscape connectivity

A hiker is very unlikely to see a lynx.

Their habitat value nevertheless makes the lower forest around Mount Zion ecologically important.

🐦 White-Tailed Ptarmigan

The white-tailed ptarmigan is Colorado’s only bird that spends its entire life in alpine environments.

Its plumage changes seasonally.

During summer, mottled brown and gray feathers provide camouflage among rocks.

During winter, the bird becomes almost entirely white.

Ptarmigan feed on alpine plants and often remain surprisingly still when approached.

Watch carefully where you step in tundra habitat.

🦅 Raptors

Golden eagles and other raptors use the open landscapes of central Colorado.

The broad alpine ridge around Mount Zion provides excellent conditions for soaring.

Raptors use rising air currents to conserve energy while searching large areas for prey.

Smaller mammals such as ground squirrels, marmots, and rabbits form part of the food web supporting these predators.

🌲 Forest Health Around Mount Zion

Mount Zion lies within the Tennessee Creek vegetation-management area.

The Forest Service has undertaken projects across thousands of acres near:

Mount Zion
Turquoise Lake
Tennessee Pass
Halfmoon Creek

Goals include reducing vulnerability to:

Mountain pine beetle
Severe wildfire
Forest disease

The projects also aim to improve watershed function and wildlife habitat.

Visitors may therefore encounter active or recently treated forest areas on lower approaches.

Obey temporary closures around forestry operations.

🏘️ Leadville

Leadville provides the main base for exploring Mount Zion.

The city sits at approximately 10,150 feet, making it one of the highest incorporated communities in the United States.

Its history is inseparable from mining.

During the late nineteenth century, Leadville became one of the most important silver-mining centers in America.

Today, visitors can find:

Historic buildings
Mining museums
Restaurants
Outdoor shops
Campgrounds
Trail access

The city also provides easy access to both the Sawatch and Mosquito mountain systems.

🏔️ View of Mount Elbert

One of Mount Zion’s biggest rewards is the view across the Arkansas Valley toward Mount Elbert.

Mount Elbert reaches approximately:

14,440 feet

making it:

Colorado’s highest mountain
The highest summit in the Rocky Mountains
The second-highest summit in the contiguous United States

From Mount Zion, the difference in scale is obvious.

Elbert’s enormous broad mass dominates the western skyline.

🏔️ Mount Massive

Immediately north of Mount Elbert rises Mount Massive.

At roughly 14,428 feet, it is Colorado’s second-highest mountain.

Mount Massive has an exceptionally long high-elevation ridge.

Several points along the massif exceed 14,000 feet.

The juxtaposition is one of Mount Zion’s great scenic advantages.

A relatively accessible 12,000-foot summit provides a front-row view toward Colorado’s two highest mountains.

🏔️ Mount Arkansas

To the east and northeast lies Mount Arkansas, one of the major thirteeners of the northern Mosquito Range.

Mount Arkansas rises above the Highway 91 corridor toward Fremont Pass.

Its summit reaches approximately 13,800 feet.

The mountain is part of the higher terrain linking the Mosquito and Tenmile ranges.

Together, Mount Zion, Buckeye Peak, and Mount Arkansas help illustrate the complicated transition between Colorado’s central mountain groups.

🎿 Ski Cooper and Tennessee Pass

Northwest of Mount Zion lies Tennessee Pass, crossed by U.S. Highway 24.

The pass is home to Ski Cooper, a historic ski area associated with nearby Chicago Ridge.

The area played an important role in World War II ski training.

The U.S. Army established Camp Hale nearby for the 10th Mountain Division, whose soldiers trained for winter mountain warfare.

Ski Cooper later developed from that military ski-training legacy.

Today, the Tennessee Pass and Chicago Ridge region supports:

Alpine skiing
Nordic skiing
Snowshoeing
Backcountry recreation

Mount Zion forms part of this same broader high-elevation landscape.

📊 Mount Zion vs. Colorado Fourteeners

Mount Zion is far lower than Colorado’s famous fourteeners.

Mountain	Elevation
Mount Elbert	~14,440 ft
Mount Massive	~14,428 ft
Mount Sherman	~14,043 ft
Mount Arkansas	~13,800 ft
Buckeye Peak	~12,873 ft
Mount Zion	12,126 ft

The lower elevation can make Mount Zion a useful objective for hikers who want a high-country experience without committing to a major fourteener day.

Altitude and weather still require respect.

❓ Frequently Asked Questions

How high is Mount Zion in Lake County?

Mount Zion reaches approximately 12,126 feet (3,696 meters) according to USGS-linked topographic data.

Where is Mount Zion?

It lies approximately four miles north of Leadville, Colorado, in Lake County.

Is this the Mount Zion near Golden?

No.

Colorado has another Mount Zion near Golden that reaches only about 7,060 feet.

This article covers the 12,126-foot Mount Zion near Leadville.

What mountain range is Mount Zion in?

It lies on the southern portion of Chicago Ridge within the broader Tenmile-Mosquito mountain system, near the northwestern side of the Mosquito Range.

It should not be classified as part of the Gore Range.

What is Mount Zion’s Nearest Higher Neighbor?

Its NHN is Buckeye Peak.

How prominent is Mount Zion?

Approximately 250 feet (76 meters).

How isolated is Mount Zion?

Approximately 1.56 miles (2.51 kilometers).

Is Mount Zion a ranked Colorado peak?

Not under the commonly used 300-foot prominence rule.

Its prominence is approximately 250 feet.

Is Mount Zion a volcano?

No.

The mountain contains intrusive igneous rocks, including the historically named Mount Zion Porphyry, but it is not a volcanic cone.

What is Mount Zion Porphyry?

It is a porphyritic intrusive rock named from exposures on Mount Zion.

Historical descriptions identify quartz, feldspar, and mica as its major components.

Is there a trail to Mount Zion?

The main approach follows Forest Road 109 and connecting high-country roads.

The exact summit lies a short distance away from the road and generally requires an off-trail walk across alpine terrain.

How long is the hike?

A Mount Zion-only road route is commonly around 8 to 8.5 miles round trip, depending on the starting location.

Longer outings can continue toward Buckeye Peak.

Is the climb technical?

Normally no in dry summer conditions.

The usual route is primarily road hiking followed by easy off-trail alpine terrain.

Snow and winter conditions can make it much more serious.

Can you drive near Mount Zion?

High-clearance 4WD vehicles can use portions of the forest-road system when legally open and conditions permit.

Seasonal restrictions apply to some roads.

When is the best time to hike Mount Zion?

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

Is a permit required?

There is not generally a quota-style summit permit for ordinary day hiking.

However, visitors must obey Forest Service road closures, motor-vehicle restrictions, fire rules, and any temporary management orders.

What can you see from the summit?

Views can include:

Leadville
Turquoise Lake
Mount Elbert
Mount Massive
Mosquito Range
Upper Arkansas River Valley
Buckeye Peak
Chicago Ridge

⭐ Why Mount Zion Is Special

Mount Zion will never compete with Colorado’s fourteeners for altitude.

It does not have enormous prominence.

Its summit is broad rather than dramatic.

There is no famous technical climbing route.

Yet the mountain has a story that many far higher peaks cannot match.

Mount Zion stands at a crossroads of Colorado mountain geography.

To the west rise Mount Elbert and Mount Massive, the state’s two highest summits.

To the east stretches the Mosquito Range.

Northward, the ridge continues toward Buckeye Peak, Chicago Ridge, Tennessee Pass, and the historic terrain associated with the 10th Mountain Division.

Then there is the geology.

More than a century ago, geologists studying the extraordinary Leadville mining district encountered a distinctive gray porphyry containing quartz, feldspar, mica, zircon, magnetite, and apatite.

They named it Mount Zion Porphyry.

The mountain became a reference point in the geological literature of one of America’s classic mining regions.

Today, an outing to the summit follows old forest and mining roads from lower lodgepole forests into alpine tundra.

Pikas call from talus.

Ptarmigan blend into rocky slopes.

Wildflowers bloom during the brief summer.

Across the valley, the Sawatch giants fill the skyline.

Mount Zion is therefore a perfect example of why a mountain does not need to be a fourteener—or even a highly prominent peak—to deserve attention.

It is a 12,126-foot alpine summit, a geological type locality, a quiet hiking destination, and a superb viewpoint over the historic Leadville high country.

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