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1,175 ft
Distance
-149 ft
Descent
00:02:25
Avg time
-149 ft
Altitude change
9,600 ft
Altitude min
9,749 ft
Altitude max
9,749 ft
Altitude start
9,600 ft
Altitude end
-12.7%
Grade
-25.9%
Grade max
-3.1%
Grade min
1,152 ft
Distance down
20 ft
Distance flat
00:02:25
Avg time
Boulder Mason Details
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Activities
- Mountain Bike
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Riding AreaCrested Butte Mountain Bike Park
Crested Butte, Colorado -
Difficulty Rating
-
Voted DifficultyDouble Black Diamond (1 vote)
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Local Popularity45 in Mountain Biking
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Global Ranking#87468 in Mountain Biking
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Trail TypeSingletrack
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Dogs AllowedYes
This is a spur from Avery, and it is rated a single diamond, but it is more difficult and rocky than Avery. If you combine the rocky sections of Avery and condense them, that is Boulder Mason.
Trail Supporters
USFSLand Manager
Bike Park
Traditionally Indigenous Territory
Recent Activity on Trail
Past Week
- 3 rides
- 17 miles average
6 Months
- 3 rides
- 17 miles avg distance
All
- 120 rides
- Last: Jun 13, 2026
| c1 | c2 | c3 | c4 |
|---|---|---|---|
January | February | March | April |
May | June | July | August |
September | October | November | December |
Boulder Mason Trail Reports
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Trail Conditions
- Unknown
- Snow Groomed
- Snow Packed
- Snow Covered
- Snow Cover Partial
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- Icy
- Prevalent Mud
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Directions to boulder-mason trailhead
(38.899410, -106.957270)
Photos
3 more »
Videos
2 more »
2:07 |
619 |
Jul 28, 2009 , Crested Butte
3:27 |
356 |
Jul 23, 2009 , Crested Butte
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Nearby Trails
- Down Time 873 ft
- Aspen Park Road 1,132 ft
- Aspen Park Road 1,132 ft
- Sharp Shooter 1,237 ft
- Big Al's 1,306 ft
Crested Butte Mountain Bike Park
- By todd
Trailforks & contributors - #85543 - 1,510 views
Frequently Asked Questions About Boulder Mason
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Where is Boulder Mason located?
Boulder Mason is located in CBMR/Evolution Bike Park, Crested Butte, Colorado, United States. It is part of the CBMR/Evolution Bike Park trail network. The trailhead is located at coordinates 38.89941, -106.95727.
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How hard is Boulder Mason?
Boulder Mason is rated as Black Diamond difficulty. The average grade is 12.7%.
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What is the elevation gain for Boulder Mason?
The trail has 45 m of elevation descent. The elevation ranges from 2,926 m to 2,972 m.
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How long is Boulder Mason?
Boulder Mason is 358.0 m long. The trail type is singletrack.
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