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Trekking in the Four Pass Loop

Colorado·United States

Trekking in the Four Pass Loop

Photo: lamblukas · Wikimedia Commons (CC BY 2.0)

Epic~4 daysPermit required

Why go

The Four Pass Loop circles the Maroon Bells through the Maroon Bells-Snowmass Wilderness, crossing West Maroon, Frigid Air, Trail Rider and Buckskin passes. Wildflower meadows, alpine lakes and red rock peaks make it one of the finest multi-day hikes in the Rockies.

When

In season: Jul–Sep · Peak: Aug

Who it’s for

Skill
Intermediate–Advanced
Effort
Serious
Suitable from
14+ · Teen+
Crowds
Steady
Cost
$

Trekking specifics

Distance
45 km
Total ascent
2400 m
Max altitude
3780 m
Pass altitude
3780 m
Accommodation
Wild camping by permit
Technical
Good trail, high altitude, storm exposure on passes

What to expect

About 45 km with 2,400 m of climbing, all above 2,900 m, so altitude is a factor. Afternoon thunderstorms are near daily in summer, so start early to be off the passes by midday.

Routes

What the difficulty bands mean
moderate
Sustained effort or some exposure; comfort on the terrain expected.
hard
Long, technical or serious — experience and the right conditions required.
  1. Crater Lake and Buckskin Pass

    moderate

    The first day out and back, the taster

  2. Full loop

    hard

    Four passes over 12,000 feet round the Maroon Bells

  3. Snowmass Lake extension

    hard

    Side trip to the lake under the fourteener

How to start

Reserve the overnight wilderness permit and the shuttle to Maroon Lake from Aspen. Acclimatise for a day or two first, walk Crater Lake and Buckskin Pass as a taster, and add the side trip to Snowmass Lake.

What else is in Colorado

Trekking elsewhere

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