Four Pass Loop

 25 votes
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Featured Hike

27.1 Miles 43.6 Kilometers



7,734' 2,357 m


-7,735' -2,358 m


12,460' 3,798 m


9,567' 2,916 m



Avg Grade (6°)


Max Grade (29°)



An all-time journey over four 12,500' alpine passes, circumnavigating the Maroon Bells.

Jason Smith


Up and over four incredible 12,000'+ mountain passes around the Maroon Bells Wilderness. People do this as a 4-day backpack... and it's a common 1-day run!
Features: Birding — Fall Colors — Lake — River/Creek — Views — Waterfall — Wildflowers — Wildlife
Dogs: Leashed

Need to Know

To access the trailhead at Maroon Lake, you must enter the Maroon Bells Scenic Area before 8am or after 5pm to access with a vehicle, which a $10 entrance fee is required. Otherwise, shuttle buses run for all visitors arriving between 8am-5pm. For more info click here.


Begin at the Maroon Snowmass Trailhead. This route is described counterclockwise, going Buckskin Pass, Trail Rider Pass, Frigid Air Pass, West Maroon Pass. Either way is great.

Proceed South on Maroon Snowmass Trail, climbing gradually over 1.5 miles. Make a right at a signed T-intersection headed for Buckskin Pass (Buckskin Pass Trail). Nowhere to go but up with spectacular views of N. Maroon (14,014') blowing up to your left as you crest treeline.

From the top turn around to savor the early morning sun on Pyramid Peak (14,018'), eye up the trail descending right and take it down toward the densely forested Snowmass Creek drainage. After about 3 miles from the top of Buckskin, take the first left onto Geneva Lake Trail at a t-intersection. In early August 2014, this critical juncture was not signed. Consult the Hiking Project mobile app here to make sure you make the turn.

Let the pain begin as you ascend southwestward to Trail Rider Pass over the stunning Snowmass Lake and under the eastern flanks of the hulking Snowmass Mountain (14,092').

From Trail Rider summit (12,500'), enjoy sweeping views of the remote West Elks & brace your skeleton for the steepest, most jarring descent of the day.

Note: If you encounter dangerous weather, a possible bailout is to exit to the southwest at the Geneva Lake trailhead, where you can probably hitch a ride with a 4x4 on the Lead King Loop down to Marble to make a pickup call.

About two miles off the top of Trail Rider, keep a sharp eye out for your next critical left turn, onto the unsigned North Fork Cutoff Trail. For the next mile you'll traverse southeast on a steep hillside until merging with North Fork Crystal River. If you need a break, this is a good spot to fill up water and get off your feet. After another mile, look for a ridiculous waterfall & enter the pain cave once again as you switchback above the falls to enter the otherworldly Fravert Basin.

From here, it's 2.75 miles under Maroon Peak (14,156') through unreal alpine terrain to the top of Frigid Air Pass. Keep some gas in the tank to savor this section. From Frigid Air summit (12,500'), take heart because you have just two miles and much less vertical relief to Maroon Pass.

Halfway between the passes, go straight toward Maroon at a T, meeting West Maroon Trail. Punch it over your final 12,500' pass, try to be nice to epic-ing hikers compelled to remark on how bad you are making them feel with your light / fast demeanor, and cruise the last seven miles down the West Maroon Creek drainage to your cooler.


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5.0 from 25 votes

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Feb 25, 2017
Mike Brawley
Sep 16, 2016
Sean Kershaw
Sep 14, 2016
Michael Heckendorn
Aug 27, 2016
Evan Sneath
Single-day attempt compiled in 15 hours. 27.1mi
Aug 13, 2016
Sean Thompson
Jul 16, 2016
Julie Archibald
Amazing 27.1mi
Jul 2, 2016
Myla Giroue
amazing hike! however we did it when theres alot of rain!
May 20, 2016
Victor Encinias
I am looking forward to doing this trail again along with the other trails located here when it is better weather. On my bucket list....

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  5.0 from 25 votes


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Great hike! Crazily I did this with a friend in a day and a 1/4. Didn't have time to enjoy the beauty. Back again this summer with my son, although we're going to take a few days! Apr 7, 2015

We always do it clockwise and LOVE it. Some fantastic camping spots along the way! May 12, 2016

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