USFS National Forest System Trails · Colville National Forest · Washington · Updated October 2026
13 Mile (USFS trail 23) is a 16.3 mi trail in Colville National Forest, Washington. Mountain bikes are designated as allowed, May–Oct, with no Class 1 e-bike designation on record.
- Trail length
- 16.3 mi
- Grade-based difficulty
- Advancedgrade band +12-20%
- Surface
- Native Material
- USFS trail class
- Class 31 primitive · 5 developed
Can I bike 13 Mile?
| Use | Status | Season on record |
|---|---|---|
| Mountain bike | Allowed | May–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 Colville National Forest, 64% of rideable trail miles are open to mountain bikes — a Bike Access Grade of B.
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About this trail
13 Mile (USFS trail 23) runs 16.3 mi through Colville National Forest in Washington. 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 Advanced (grade band +12-20%) — a steep steepness profile derived from USFS slope data, not a technical mountain-bike rating. Mountain bikes are allowed, with a May–Oct season in the data. 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 13 Mile?
- Yes. Mountain bikes are designated as allowed on 13 Mile in Colville National Forest, typically May–Oct, per USFS data.
- Are e-bikes allowed on 13 Mile?
- No e-bike class (1, 2 or 3) is designated on 13 Mile in the USFS data.
- How long is 13 Mile?
- 13 Mile measures about 16.3 mi in total, summed across its mapped National Forest System segments.
- What is the surface of 13 Mile?
- USFS data records the tread surface of 13 Mile as native material.
- How difficult is 13 Mile?
- 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 Colville National Forest (USFS trail geometry isn't mapped).
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