USFS National Forest System Trails · Salmon-Challis National Forest · Idaho · Updated June 2026
Summerhouse Canyon (USFS trail 4177.02) is a 2.2 mi trail in Salmon-Challis National Forest, Idaho. Mountain-bike use here is accepted but discouraged in USFS data, with Class 1 e-bikes also designated.
Can I bike Summerhouse Canyon?
| Use | Status | Season on record |
|---|---|---|
| Mountain bike | Accepted but discouraged | — |
| Class 1 e-bike (pedal-assist, 20 mph) | Allowed | Jul–Sep |
| Class 2 e-bike (throttle, 20 mph) | Allowed | Jul–Sep |
| Class 3 e-bike (pedal-assist, 28 mph) | Allowed | Jul–Sep |
Zooming out: across Salmon-Challis National Forest, 26% of rideable trail miles are open to mountain bikes — a Bike Access Grade of C.
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About this trail
In Salmon-Challis National Forest, Idaho, Summerhouse Canyon (USFS trail 4177.02) covers 2.2 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. The tread is mapped 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. Note that mountain-bike use here is discouraged in USFS records — confirm with the ranger district before riding. On the electric side, Class 1, Class 2, Class 3 e-bikes are also designated (Jul–Sep) — 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 Salmon-Challis National Forest.
Frequently asked questions
- Can you mountain bike on Summerhouse Canyon?
- Mountain-bike use on Summerhouse Canyon 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 Summerhouse Canyon?
- Class 1, Class 2, Class 3 e-bikes are designated on Summerhouse Canyon in the USFS data.
- How long is Summerhouse Canyon?
- Summerhouse Canyon measures about 2.2 mi in total, summed across its mapped National Forest System segments.
- What is the surface of Summerhouse Canyon?
- USFS data records the tread surface of Summerhouse Canyon as native material.
- How difficult is Summerhouse Canyon?
- 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 Salmon-Challis National Forest (USFS trail geometry isn't mapped).
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