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26.2 miles
Distance
7,700 ft
Climb
-7,698 ft
Descent
2 miles
High Point
2 ft
Altitude change
9,566 ft
Altitude min
9,566 ft
Altitude start
9,570 ft
Altitude end
-128.1%
Grade max
83.6%
Grade min
13 miles
Distance climb
12 miles
Distance down
4,403 ft
Distance flat
Four Pass loop is a classic Colorado backpacking and trail running trail located in Aspen. The name comes from the four mountain passes that the trail works through: Buckskin Pass, Trail Rider Pass, Frigid Air Pass and West Maroon Pass. This 27 mile loop gains almost 8,000ft and stays above 10,500ft for almost the entire day. I don’t say this lightly, but the Four Pass loop is a destination hike and worthy of a trip to Colorado on its own right.
Detailed Description
Four Pass Loop is a 26 mile moderately popular expert route located near Maroon Bells - Snowmass Wilderness Area Colorado. This hike primary route and has a hard overall physical rating. This route includes 5 trails. This route climbs 7,700 ft with a max elevation of 12,471 ft then descends -7,698 ft.
Trail Issues on Route
- Minor Issue / Yellow: 2 trails (newest: Sep 20, 2025)
Route Supporters
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Stats
-
Distance26 miles
-
Avg time18 hr 19 min
-
Altitude min9,566 ft
-
Altitude start9,566 ft
-
Altitude end9,570 ft
-
Climb1 mile
-
Descent-7,698 ft
-
Grade max-128.1%
-
Grade min83.6%
-
Distance climb13 miles
-
Distance down12 miles
-
Distance flat4,403 ft
Comments
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Trails in Route
| 338 ft | |||||
| 259 ft | |||||
| 1 mile | |||||
| 410 ft | |||||
| 338 ft |
Details
-
Riding area
-
Primary ActivityHike
-
Other Activities
- Trail Running
-
Difficulty ratingBlack Diamond
-
Route TypeLoop
-
eBike Allowed
-
Physical ratingHard
Directions
- Walk southwest on Maroon Snowmass.
- Continue for 500 meters.
- Keep right to stay on Maroon Snowmass.
- Continue for 300 meters.
- Keep right to stay on Maroon Snowmass.
- Continue for 1.5 kilometers.
- Turn right to stay on Maroon Snowmass.
- Continue for 600 meters.
- Keep left to take West Maroon.
- Continue for 800 meters.
- Keep left to stay on West Maroon.
- Continue for 200 meters.
- Turn left to stay on West Maroon.
- Continue for 8 kilometers.
close
3D
Trail Conditions
- Unknown
- Snow Groomed
- Snow Packed
- Snow Covered
- Snow Cover Partial
- Freeze/thaw Cycle
- Icy
- Prevalent Mud
- Wet
- Variable
- Ideal
- Dry
- Very Dry
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- bi-directional trail
- no data
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Photos
Recent Trail Reports Along Route
| status | trail | date | condition | description |
|---|---|---|---|---|
Sep 20, 2025 @ 7:32am (America/Denver) Sep 20, 2025 | Some mud | |||
Sep 18, 2025 @ 8:52am (America/Denver) Sep 18, 2025 | Some mud puddles/mud |
- By 1Hunter-R
& contributors - #36442 - 1,741 views
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