USFS National Forest System Trails · Boise National Forest · Idaho · Updated June 2026
Sulphur - West Elk (USFS trail 006005) is a 3.4 mi trail in Boise National Forest, Idaho. Mountain bikes are designated as allowed year-round, with no Class 1 e-bike designation on record.
Can I bike Sulphur - West Elk?
| 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 Boise National Forest, 99% of rideable trail miles are open to mountain bikes — a Bike Access Grade of A.
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About this trail
In Boise National Forest, Idaho, Sulphur - West Elk (USFS trail 006005) covers 3.4 mi of National Forest System trail. The figures here are pulled from the official US Forest Service trail data for Boise National Forest, covering the trail's mileage, tread, grade band, and the bike and e-bike uses the agency lists as designated. USFS records list its surface as native material. No grade band is recorded, so a steepness-based difficulty isn't available for this trail. Mountain bikes are allowed, open year-round in the data. No e-bike class (1, 2 or 3) is designated on this trail in the USFS data, so treat it as a non-motorized route unless a posted order says otherwise. 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. 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 Boise National Forest.
Frequently asked questions
- Can you mountain bike on Sulphur - West Elk?
- Yes. Mountain bikes are designated as allowed on Sulphur - West Elk in Boise National Forest, year-round, per USFS data.
- Are e-bikes allowed on Sulphur - West Elk?
- No e-bike class (1, 2 or 3) is designated on Sulphur - West Elk in the USFS data.
- How long is Sulphur - West Elk?
- Sulphur - West Elk measures about 3.4 mi in total, summed across its mapped National Forest System segments.
- What is the surface of Sulphur - West Elk?
- USFS data records the tread surface of Sulphur - West Elk as native material.
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 Boise National Forest (USFS trail geometry isn't mapped).
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