USFS National Forest System Trails · Custer Gallatin National Forest · Montana · Updated June 2026
Buck Ridge Spur 1 (USFS trail 10.1) is a 1.3 mi trail in Custer Gallatin National Forest, Montana. Mountain bikes are designated as allowed year-round, with Class 1 e-bikes also designated.
Can I bike Buck Ridge Spur 1?
| Use | Status | Season on record |
|---|---|---|
| Mountain bike | Allowed | year-round |
| Class 1 e-bike (pedal-assist, 20 mph) | Allowed | Jun–Sep |
| Class 2 e-bike (throttle, 20 mph) | Allowed | Jun–Sep |
| Class 3 e-bike (pedal-assist, 28 mph) | Allowed | Jun–Sep |
Zooming out: across Custer Gallatin National Forest, 98% of rideable trail miles are open to mountain bikes — a Bike Access Grade of A.
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About this trail
Buck Ridge Spur 1 (USFS trail 10.1) runs 1.3 mi through Custer Gallatin National Forest in Montana. 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. Mountain bikes are allowed, open year-round in the data. On the electric side, Class 1, Class 2, Class 3 e-bikes are also designated (Jun–Sep) — 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 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. For day-of certainty on closures or seasonal orders, check directly with the ranger district, since this reflects the USFS data as of the latest refresh.
Frequently asked questions
- Can you mountain bike on Buck Ridge Spur 1?
- Yes. Mountain bikes are designated as allowed on Buck Ridge Spur 1 in Custer Gallatin National Forest, year-round, per USFS data.
- Are e-bikes allowed on Buck Ridge Spur 1?
- Class 1, Class 2, Class 3 e-bikes are designated on Buck Ridge Spur 1 in the USFS data.
- How long is Buck Ridge Spur 1?
- Buck Ridge Spur 1 measures about 1.3 mi in total, summed across its mapped National Forest System segments.
- What is the surface of Buck Ridge Spur 1?
- USFS data records the tread surface of Buck Ridge Spur 1 as native material.
- How difficult is Buck Ridge Spur 1?
- 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 Custer Gallatin National Forest (USFS trail geometry isn't mapped).
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