USFS National Forest System Trails · Sierra National Forest · California · Updated June 2026
Power Loop (USFS trail 21E235) is a 0.5 mi trail in Sierra National Forest, California. Mountain-bike use here is restricted in USFS data, with Class 1 e-bikes also designated.
Can I bike Power Loop?
| Use | Status | Season on record |
|---|---|---|
| Mountain bike | Restricted | — |
| Class 1 e-bike (pedal-assist, 20 mph) | Allowed | January, Mar–Dec |
| Class 2 e-bike (throttle, 20 mph) | Allowed | January, Mar–Dec |
| Class 3 e-bike (pedal-assist, 28 mph) | Allowed | January, Mar–Dec |
Zooming out: across Sierra National Forest, 0% of rideable trail miles are open to mountain bikes — a Bike Access Grade of F.
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About this trail
In Sierra National Forest, California, Power Loop (USFS trail 21E235) covers 0.5 mi of National Forest System trail. 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. The tread is mapped as native material. Based on slope, this is a Intermediate trail (grade band 8-10%); that reflects moderate gradient and is not the same as a technical MTB difficulty rating. Note that mountain-bike use here is restricted in USFS records — confirm with the ranger district before riding. The record additionally permits Class 1, Class 2, Class 3 e-bike use, January, Mar–Dec; recall that Class 1 is pedal-assist, while Class 2 adds a throttle and Class 3 a higher cutoff 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. 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 Power Loop?
- Mountain-bike use on Power Loop is restricted in USFS records, though Class 1 e-bike use is designated. Confirm current rules with the managing ranger district.
- Are e-bikes allowed on Power Loop?
- Class 1, Class 2, Class 3 e-bikes are designated on Power Loop in the USFS data.
- How long is Power Loop?
- Power Loop measures about 0.5 mi in total, summed across its mapped National Forest System segments.
- What is the surface of Power Loop?
- USFS data records the tread surface of Power Loop as native material.
- How difficult is Power Loop?
- Its grade-based difficulty is Intermediate (grade band 8-10%), 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 Sierra National Forest (USFS trail geometry isn't mapped).
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