USFS National Forest System Trails · Lolo National Forest · Montana · Updated June 2026
Grant Creek Ravine (USFS trail 34) is a 2.8 mi trail in Lolo National Forest, Montana. Mountain bikes are designated as allowed year-round, with no Class 1 e-bike designation on record.
Can I bike Grant Creek Ravine?
| Use | Status | Season on record |
|---|---|---|
| Mountain bike | Allowed | year-round |
| 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 Lolo National Forest, 34% of rideable trail miles are open to mountain bikes — a Bike Access Grade of C.
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About this trail
Grant Creek Ravine (USFS trail 34) is a 2.8 mi trail in Lolo National Forest, Montana. Everything below comes straight from the US Forest Service National Forest System Trails dataset — length, surface, slope-derived difficulty, and the specific bike and e-bike designations on record — so you can check legality before you load up. Underfoot, the trail is recorded as native material. Its grade-based difficulty is Intermediate (grade band 10-12%) — a moderate steepness profile derived from USFS slope data, not a technical mountain-bike rating. Bike use is designated as allowed year-round. 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. 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 Grant Creek Ravine?
- Yes. Mountain bikes are designated as allowed on Grant Creek Ravine in Lolo National Forest, year-round, per USFS data.
- Are e-bikes allowed on Grant Creek Ravine?
- No e-bike class (1, 2 or 3) is designated on Grant Creek Ravine in the USFS data.
- How long is Grant Creek Ravine?
- Grant Creek Ravine measures about 2.8 mi in total, summed across its mapped National Forest System segments.
- What is the surface of Grant Creek Ravine?
- USFS data records the tread surface of Grant Creek Ravine as native material.
- How difficult is Grant Creek Ravine?
- Its grade-based difficulty is Intermediate (grade band 10-12%), 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 Lolo National Forest (USFS trail geometry isn't mapped).
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