USFS National Forest System Trails · Idaho Panhandle National Forests · Idaho · Updated June 2026
Derr Creek (USFS trail 66) is a 14.4 mi trail in Idaho Panhandle National Forests, Idaho. Mountain-bike use here is accepted but discouraged in USFS data, with Class 1 e-bikes also designated.
Can I bike Derr Creek?
| 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 Idaho Panhandle National Forests, 6% of rideable trail miles are open to mountain bikes — a Bike Access Grade of F.
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About this trail
In Idaho Panhandle National Forests, Idaho, Derr Creek (USFS trail 66) covers 14.4 mi of National Forest System trail. The figures here are pulled from the official US Forest Service trail data for Idaho Panhandle National Forests, covering the trail's mileage, tread, grade band, and the bike and e-bike uses the agency lists as designated. USFS records list its surface as native material. Its grade-based difficulty is Advanced (grade band 12-20%) — a steep steepness profile derived from USFS slope data, not a technical mountain-bike 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 2 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 Idaho Panhandle National Forests.
Frequently asked questions
- Can you mountain bike on Derr Creek?
- Mountain-bike use on Derr Creek 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 Derr Creek?
- Class 1, Class 2, Class 3 e-bikes are designated on Derr Creek in the USFS data.
- How long is Derr Creek?
- Derr Creek measures about 14.4 mi in total, summed across its mapped National Forest System segments.
- What is the surface of Derr Creek?
- USFS data records the tread surface of Derr Creek as native material.
- How difficult is Derr 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 Idaho Panhandle National Forests (USFS trail geometry isn't mapped).
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