USFS National Forest System Trails · Flathead National Forest · Montana · Updated June 2026
Tally- Ashley (USFS trail 800) is a 19.6 mi trail in Flathead National Forest, Montana. Mountain-bike use here is accepted but discouraged in USFS data, with Class 1 e-bikes also designated.
Can I bike Tally- Ashley?
| Use | Status | Season on record |
|---|---|---|
| Mountain bike | Accepted but discouraged | — |
| 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 Flathead National Forest, 27% of rideable trail miles are open to mountain bikes — a Bike Access Grade of C.
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About this trail
In Flathead National Forest, Montana, Tally- Ashley (USFS trail 800) covers 19.6 mi of National Forest System trail. 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. For traditional mountain bikes, use is discouraged according to USFS data. On the electric side, Class 1, Class 2, Class 3 e-bikes are also designated — 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. Treat this as a planning reference rather than a live conditions report, and verify any time-sensitive closure or order with the ranger district that manages Flathead National Forest.
Frequently asked questions
- Can you mountain bike on Tally- Ashley?
- Mountain-bike use on Tally- Ashley is discouraged in USFS records, though Class 1 e-bike use is designated. Confirm current rules with the managing ranger district.
- Are e-bikes allowed on Tally- Ashley?
- Class 1, Class 2, Class 3 e-bikes are designated on Tally- Ashley in the USFS data.
- How long is Tally- Ashley?
- Tally- Ashley measures about 19.6 mi in total, summed across its mapped National Forest System segments.
- What is the surface of Tally- Ashley?
- USFS data records the tread surface of Tally- Ashley as native material.
- How difficult is Tally- Ashley?
- 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 Flathead National Forest (USFS trail geometry isn't mapped).
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