USFS National Forest System Trails · Los Padres National Forest · California · Updated June 2026
Willow Spring (USFS trail 31W01) is a 9.3 mi trail in Los Padres National Forest, California. Mountain bikes are designated as allowed year-round, with no Class 1 e-bike designation on record.
Can I bike Willow Spring?
| Use | Status | Season on record |
|---|---|---|
| Mountain bike | Allowed | year-round |
| Class 1 e-bike (pedal-assist, 20 mph) | — | |
| Class 2 e-bike (throttle, 20 mph) | — | |
| Class 3 e-bike (pedal-assist, 28 mph) | — |
Zooming out: across Los Padres National Forest, 51% of rideable trail miles are open to mountain bikes — a Bike Access Grade of B.
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About this trail
Willow Spring (USFS trail 31W01) is a 9.3 mi trail in Los Padres National Forest, California. 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. USFS records list its surface as native material. Based on slope, this is a Intermediate trail (grade band 10-12%); that reflects moderate gradient and is not the same as a technical MTB difficulty 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 Willow Spring?
- Yes. Mountain bikes are designated as allowed on Willow Spring in Los Padres National Forest, year-round, per USFS data.
- Are e-bikes allowed on Willow Spring?
- No e-bike class (1, 2 or 3) is designated on Willow Spring in the USFS data.
- How long is Willow Spring?
- Willow Spring measures about 9.3 mi in total, summed across its mapped National Forest System segments.
- What is the surface of Willow Spring?
- USFS data records the tread surface of Willow Spring as native material.
- How difficult is Willow Spring?
- 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 Los Padres National Forest (USFS trail geometry isn't mapped).
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