USFS National Forest System Trails · Idaho Panhandle National Forests · Idaho · Updated June 2026
Sidehill (USFS trail 415) is a 12.3 mi trail in Idaho Panhandle National Forests, Idaho. Mountain bikes are designated as allowed, Jun–Sep, with Class 1 e-bikes also designated.
Can I bike Sidehill?
| Use | Status | Season on record |
|---|---|---|
| Mountain bike | Allowed | Jun–Sep |
| 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, Sidehill (USFS trail 415) covers 12.3 mi of National Forest System trail. This profile summarizes what the official US Forest Service trail record says about riding it: how long the trail is, what it's built on, how steep the route grades out, and which forms of bike use the agency has designated. Underfoot, the trail is recorded as native material. Based on slope, this is a Advanced trail (grade band 12-20%); that reflects steep gradient and is not the same as a technical MTB difficulty rating. Mountain bikes are allowed, with a Jun–Sep season in the 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 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 Sidehill?
- Yes. Mountain bikes are designated as allowed on Sidehill in Idaho Panhandle National Forests, typically Jun–Sep, per USFS data.
- Are e-bikes allowed on Sidehill?
- Class 1, Class 2, Class 3 e-bikes are designated on Sidehill in the USFS data.
- How long is Sidehill?
- Sidehill measures about 12.3 mi in total, summed across its mapped National Forest System segments.
- What is the surface of Sidehill?
- USFS data records the tread surface of Sidehill as native material.
- How difficult is Sidehill?
- 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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