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13,228 ft · San Juan Mountains, Colorado

Greenhalgh Mtn

Greenhalgh Mtn is a 13,228 ft peak in the San Juan Mountains, Colorado. The standard route is the Greenhalgh Mtn West Ridge: 4 mi, 2,015 ft of gain, Class 2.

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Greenhalgh Mtn in the San Juan Mountains, Colorado

Greenhalgh Mtn at a glance

  • Elevation13,228 ft4,031 m
  • RouteGreenhalgh Mtn West RidgeClass 2
  • Distance4 mi2,015 ft gain
  • Time3 – 5 hrsHard effort
  • SeasonJul – Sep
  • RangeSan Juan MountainsColorado

Climbing the Greenhalgh Mtn West Ridge

Greenhalgh Mtn sits in the San Juan Mountains. The usual ascent is Greenhalgh Mtn West Ridge, rated Class 2. Plan about 4.7 miles round-trip with roughly 2,015 ft of gain from about 12,590 ft. Expect a rough 4WD approach road. Summer monsoon storms build fast, so start early and be off the summit by early afternoon. Watch for loose rock, route-finding on talus, and brief exposed steps where the terrain steepens. Stats and approach details follow climb13ers.com. Bring layers for cold wind on the summit ridge.

Gear and hazards

What to bring

  • Backpack (25–35 L)
  • Hiking Boots
  • Water
  • Offline Maps
  • Headlamp
  • Satellite Communicator
  • Whistle
  • Sunglasses
  • Sunscreen
  • Sun Hat
  • Midlayer
  • Insulated Jacket
  • Hardshell Jacket
  • Warm Hat
  • Buff
  • Midweight Gloves
  • Trekking Poles
  • GPS Device
  • Power Bank
  • Water Filter
  • First-Aid Kit
  • Emergency Bivy

What to watch for

  • Storms
  • High altitude
  • Route-finding difficulty

Quests with Greenhalgh Mtn

Peaks near Greenhalgh Mtn

  1. Sheep Mtn

    Sheep Mtn

    13,304 ft · 0.7 mi away

  2. Canby Mtn

    Canby Mtn

    13,487 ft · 2.5 mi away

  3. Stony Pass Peak

    Stony Pass Peak

    13,172 ft · 2.7 mi away

  4. UN 13076

    UN 13076

    13,076 ft · 3.4 mi away

Frequently asked questions

How tall is Greenhalgh Mtn?

Greenhalgh Mtn is 13,228 feet (4,031 m) tall. It is in the San Juan Mountains, Colorado.

How does Greenhalgh Mtn rank among the Colorado 13ers?

At 13,228 feet, Greenhalgh Mtn is the 406th highest of the 582 Colorado 13ers. The highest is Grizzly Peak.

How hard is it to hike Greenhalgh Mtn?

The Greenhalgh Mtn West Ridge is Class 2, which means off-trail hiking with some use of your hands for balance. Yak rates the overall effort hard: 4 miles with 2,015 feet of elevation gain.

How long does it take to hike Greenhalgh Mtn?

Most people take 3 – 5 hours round trip on the Greenhalgh Mtn West Ridge, covering 4 miles with 2,015 feet of elevation gain, so most people do it in a day.

Can a beginner hike Greenhalgh Mtn?

The Greenhalgh Mtn West Ridge needs no climbing skills, but it is a hard day: 4 miles with 2,015 feet of elevation gain. Build up on shorter hikes first, start early and carry plenty of water and layers.

Will you get altitude sickness on Greenhalgh Mtn?

You might. Most people feel the altitude above 8,000 feet, and Greenhalgh Mtn reaches 13,228 feet. Spend a night or two at elevation first, drink plenty of water and turn back if a headache, nausea or dizziness gets worse.

What time should you start hiking Greenhalgh Mtn?

Early. Afternoon thunderstorms are common in summer, so aim to be off the summit and the exposed upper mountain by early afternoon.

When is the best time to hike Greenhalgh Mtn?

The usual hiking window is July to September. Outside it, expect snow, storms or closed access, and check the summit forecast before you go.

Climb Greenhalgh Mtn with Yak

Plan your route on a topo map, check the summit forecast, then log your climb and see what is left on your list

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