USFS National Forest System Trails · Kootenai National Forest · Montana · Updated June 2026
North Fork Big Creek (USFS trail 150) is a 3.8 mi trail in Kootenai National Forest, Montana. Mountain bikes are designated as allowed, Jun–Oct, with no Class 1 e-bike designation on record.
Can I bike North Fork Big Creek?
| Use | Status | Season on record |
|---|---|---|
| Mountain bike | Allowed | Jun–Oct |
| Class 1 e-bike (pedal-assist, 20 mph) | Restricted | — |
| Class 2 e-bike (throttle, 20 mph) | Restricted | — |
| Class 3 e-bike (pedal-assist, 28 mph) | Restricted | — |
Zooming out: across Kootenai National Forest, 55% of rideable trail miles are open to mountain bikes — a Bike Access Grade of B.
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About this trail
North Fork Big Creek (USFS trail 150) runs 3.8 mi through Kootenai National Forest in Montana. The figures here are pulled from the official US Forest Service trail data for Kootenai National Forest, covering the trail's mileage, tread, grade band, and the bike and e-bike uses the agency lists as designated. The tread is mapped as native material. USFS slope data puts it in the Advanced band (grade band 12-20%), meaning a steep climb — keep in mind this measures steepness, not trail technicality. Bike use is designated as allowed, typically Jun–Oct. The agency lists no Class 1, 2 or 3 e-bike designation here; absent a local order to the contrary, that means e-bikes are not an allowed use on this trail. 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. 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 North Fork Big Creek?
- Yes. Mountain bikes are designated as allowed on North Fork Big Creek in Kootenai National Forest, typically Jun–Oct, per USFS data.
- Are e-bikes allowed on North Fork Big Creek?
- No e-bike class (1, 2 or 3) is designated on North Fork Big Creek in the USFS data.
- How long is North Fork Big Creek?
- North Fork Big Creek measures about 3.8 mi in total, summed across its mapped National Forest System segments.
- What is the surface of North Fork Big Creek?
- USFS data records the tread surface of North Fork Big Creek as native material.
- How difficult is North Fork Big Creek?
- 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 Kootenai National Forest (USFS trail geometry isn't mapped).
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