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Broken Thumb

Intermediate/Difficult Intermediate/Difficult
 3.3 (16)
  1. Areas
  2. CO
  3. …Central Rockies
  4. …Winter Park and Fraser
  5. Winter Park/Trestle Bike Park
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“A fast descent down a wide moto trail. ”

Jim Mapes
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3.5

Miles

5.6

KM
Singletrack

10,291' 3,137 m

High

9,487' 2,892 m

Low

29' 9 m

Up

832' 254 m

Down

5%

Avg Grade (3°)

28%

Max Grade (16°)

Dogs Leashed

E-Bikes Allowed

Description

Broken Thumb is a nice diversion from the descent down Rollins Pass (aka Corona Pass). Broken Thumb could be ridden both ways but isn't that great of a climb and would likely require some walking. The upper portion of the trail is wide, fast, and flowy with water bar whoops and some steeper sections.

The bottom half is generally flatter and was reclaimed to singletrack in 2012 or 2013. From the trailhead on Water Board Road/ FS 128 head west (left if descending Broken Thumb) to get back to Rollins Pass (aka Corona Pass).

Contacts

Land Manager: USFS - Arapaho & Roosevelt National Forests Office

Shared By:

Jim Mapes with improvements by Jacob Turner
Full Details

Trail Ratings

  3.3 from 16 votes

#33

in Winter Park/Trestle Bike Park

#13875

Overall
  3.3 from 16 votes
5 Star
6%
4 Star
38%
3 Star
38%
2 Star
19%
1 Star
0%
Trail Rankings

#33

in Winter Park/Trestle Bi…

#1,399

in Colorado

#13,875

Overall
2 Views Last Month
3,043 Since Sep 8, 2013
Intermediate/Difficult Intermediate/Difficult
0%
0%
40%
33%
27%
0%
Add a Photo

Photos

Another fun rocky section.
Jul 23, 2017 near Winter…, CO
Start of Broken Thumb from Corona Pass Rd.
Aug 16, 2021 near Winter…, CO
1/2 way down Broken Thumb.
Aug 16, 2021 near Winter…, CO
Several sections of loose scree type rock.
Jul 23, 2017 near Winter…, CO
Doubletrack on Broken Thumb trail.
Sep 9, 2013 near Winter…, CO
Rocky, fun section.
Jul 23, 2017 near Winter…, CO

0 Comments

Weather

Current Trail Conditions

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Check-Ins

Aug 6, 2025
Roylnn Serati
Sep 9, 2023
Michael Neilands
Looped this with Cross Trails to Corona Pass to the middle of Twisted Ankle. Very good shape with occasional tough obstacles like roots and stumps. 18mi — 2h 30m
Jul 11, 2021
Ryan Witt
13mi — 1h 30m
Sep 13, 2019
Tim Rykken
Aug 6, 2019
Patrick Burns
A few moments of loose chunky brilliance, separated by lots of toothy pedaling.
Jul 31, 2019
Nate T
Jun 24, 2019
Mark Swofford
There is a big difference between upper and lower. Upper is a washed out steep rocky Jeep track (expert) lower is a wide shallow singletrack (blue).
Aug 4, 2018
Patrick Burns
Occasional moments of brilliance unfortunately interrupted by boring pedaling.

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