Lostfork Basecamp
Mountain Biking business nearby (~42 mi away) — hasn't claimed their Roamze page yet
Free — you'll pick up right here.
Watch this trail
Sign up to watch it — saving subscribes you to gate, closure and report changes.
Colorado
Sourdough
8.2 mi
Distance
1,815 ft
Gain
1h 22m
Time
No verdict for this trail
We won't guess. Here is exactly what we do and don't know.
What we do know
Inside Arapaho and Roosevelt National Forests
2 managing-area boundaries mapped — agency alerts for them feed this page automatically.
Boundary data
What's missing
No access route mapped
We don't yet know which road reaches this trailhead, so we can't tell you if it's gated.
Nobody's filed a report here yet — be the first.
Trail character
Difficult
Why you'll love it
Part of Trails near 40.1°N 105.6°W
Big climb
Here's your ride, mapped
Sourdough
AI-suggested draft · review before you go
Building your full AI plan…
Elevation & route
- Distance
- 8.2 mi
- Elevation gain
- 1,815 ft
- Elevation loss
- 943 ft
Gear for the day
Building your gear list…
More about this trail ↓
Photos
Directions & GPX
About this trail
Sourdough is an 8.22-mile trail in Colorado's Trails near 40.1°N 105.6°W trail system managed by Forest Service. The trail gains 1815 feet of elevation.
Permits & access
- Managing agency
- Forest Service
Add to a trip & share
Keep exploring — more rides worth the drive
Photo: Greg Willis, CC BY-SA 3.0 (via Wikimedia Commons)Diamond Lake
~13 min drive
Diamond Lake is a 0.34-mile trail near 40.0°N 105.6°W in Colorado.
Little Raven
~2 min drive
0.42-mile trail near 40.1°N 105.6°W in Colorado with 110 ft of elevation gain.
Brainard Snowshoe Trail
~3 min drive
1.48-mile trail with 291 ft elevation gain in Colorado
Red Rock Lake Spur
~3 min drive
0.08-mile trail near 40.1°N 105.6°W in Colorado, 34 ft elevation gain
Snowshoe Trail Spur
~3 min drive
Snowshoe Trail Spur is a 0.08-mile trail in Colorado near 40.1°N 105.6°W.
Waldrop (North)
~3 min drive
2.34-mile trail in Colorado's Trails near 40.1°N 105.6°W system, 631 ft elevation gain
Tbd
~4 min drive
1.12-mile trail near 40.1°N 105.6°W with 337 ft elevation gain
Brainard Lake Cutoff
~4 min drive
0.58-mile cutoff trail near 40.1°N 105.6°W with 134 ft elevation gain
South Saint Vrain
~4 min drive
4.73-mile trail in Colorado's Trails near 40.1°N 105.6°W system
Cmc Cabin Cutoff
~4 min drive
Cmc Cabin Cutoff is a 0.29-mile trail near 40.1°N 105.6°W in Colorado.
Guided trips nearby
Local operatorsoffering guided trips. You book directly with them — Roamze doesn’t take a cut.
View operator
