USFS National Forest System Trails · San Juan National Forest · Colorado · Updated June 2026
Stoner Mesa (USFS trail 624) is a 11.4 mi trail in San Juan National Forest, Colorado. Mountain bikes are designated as allowed, Jun–Oct, with Class 1 e-bikes also designated.
Can I bike Stoner Mesa?
| Use | Status | Season on record |
|---|---|---|
| Mountain bike | Allowed | Jun–Oct |
| Class 1 e-bike (pedal-assist, 20 mph) | Allowed | Jun–Oct |
| Class 2 e-bike (throttle, 20 mph) | Allowed | Jun–Oct |
| Class 3 e-bike (pedal-assist, 28 mph) | Allowed | Jun–Oct |
Zooming out: across San Juan National Forest, 29% of rideable trail miles are open to mountain bikes — a Bike Access Grade of C.
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About this trail
Stoner Mesa (USFS trail 624) runs 11.4 mi through San Juan National Forest in 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. Underfoot, the trail is recorded as native material. Based on slope, this is a Advanced trail (grade band +12-20%); that reflects steep gradient and is not the same as a technical MTB difficulty rating. Bike use is designated as allowed, typically Jun–Oct. On the electric side, Class 1, Class 2, Class 3 e-bikes are also designated (Jun–Oct) — Class 1 being pedal-assist only, Classes 2 and 3 adding a throttle and higher assisted speed. The route is mapped as USFS Trail Class 3 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 Stoner Mesa?
- Yes. Mountain bikes are designated as allowed on Stoner Mesa in San Juan National Forest, typically Jun–Oct, per USFS data.
- Are e-bikes allowed on Stoner Mesa?
- Class 1, Class 2, Class 3 e-bikes are designated on Stoner Mesa in the USFS data.
- How long is Stoner Mesa?
- Stoner Mesa measures about 11.4 mi in total, summed across its mapped National Forest System segments.
- What is the surface of Stoner Mesa?
- USFS data records the tread surface of Stoner Mesa as native material.
- How difficult is Stoner Mesa?
- Its grade-based difficulty is Advanced (grade band +12-20%), 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 San Juan National Forest (USFS trail geometry isn't mapped).
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