USFS National Forest System Trails · Grand Mesa, Uncompahgre and Gunnison National Forests · Colorado · Updated June 2026
Doubletop (USFS trail 9405) is a 13.2 mi trail in Grand Mesa, Uncompahgre and Gunnison National Forests, Colorado. Mountain bikes are designated as allowed year-round, with Class 1 e-bikes also designated.
Can I bike Doubletop?
| Use | Status | Season on record |
|---|---|---|
| Mountain bike | Allowed | year-round |
| Class 1 e-bike (pedal-assist, 20 mph) | Allowed | year-round |
| Class 2 e-bike (throttle, 20 mph) | Allowed | year-round |
| Class 3 e-bike (pedal-assist, 28 mph) | Allowed | year-round |
Zooming out: across Grand Mesa, Uncompahgre and Gunnison National Forests, 96% of rideable trail miles are open to mountain bikes — a Bike Access Grade of A.
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About this trail
Doubletop (USFS trail 9405) is a 13.2 mi trail in Grand Mesa, Uncompahgre and Gunnison National Forests, Colorado. This profile summarizes what the official US Forest Service trail record says about riding it: how long the trail is, what it's built on, how steep the route grades out, and which forms of bike use the agency has designated. USFS records list its surface as native material. Its grade-based difficulty is Intermediate (grade band 8-10%) — a moderate steepness profile derived from USFS slope data, not a technical mountain-bike rating. Mountain bikes are allowed, open year-round in the data. The record additionally permits Class 1, Class 2, Class 3 e-bike use; recall that Class 1 is pedal-assist, while Class 2 adds a throttle and Class 3 a higher cutoff speed. The route is mapped as USFS Trail Class 4 on the agency's 1-to-5 development scale, where 1 is the most primitive, minimally maintained tread and 5 is the most developed. Because conditions, closures, and local orders change between data refreshes, confirm the current status with the managing ranger district before you ride.
Frequently asked questions
- Can you mountain bike on Doubletop?
- Yes. Mountain bikes are designated as allowed on Doubletop in Grand Mesa, Uncompahgre and Gunnison National Forests, year-round, per USFS data.
- Are e-bikes allowed on Doubletop?
- Class 1, Class 2, Class 3 e-bikes are designated on Doubletop in the USFS data.
- How long is Doubletop?
- Doubletop measures about 13.2 mi in total, summed across its mapped National Forest System segments.
- What is the surface of Doubletop?
- USFS data records the tread surface of Doubletop as native material.
- How difficult is Doubletop?
- Its grade-based difficulty is Intermediate (grade band 8-10%), derived from USFS slope data. This reflects steepness, not technical mountain-bike difficulty.
How we read this data
Grade-based difficulty above is the USFS grade (route steepness), not a technical mountain-bike rating — a gentle-grade trail can still be rocky or technical, and vice versa. Bike and e-bike status come verbatim from the USFS managed-use fields for this trail; we never infer access we can't cite. See our methodology for how the dataset is built and what each field means.
Where it is
Approximate location of Grand Mesa, Uncompahgre and Gunnison National Forests (USFS trail geometry isn't mapped).
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