USFS National Forest System Trails · Caribou-Targhee National Forest · Idaho · Updated June 2026
Upper Salt Basin (USFS trail 3520) is a 0.6 mi trail in Caribou-Targhee National Forest, Idaho. Mountain bikes are designated as allowed year-round, with no Class 1 e-bike designation on record.
Can I bike Upper Salt Basin?
| 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 Caribou-Targhee National Forest, 98% of rideable trail miles are open to mountain bikes — a Bike Access Grade of A.
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About this trail
In Caribou-Targhee National Forest, Idaho, Upper Salt Basin (USFS trail 3520) covers 0.6 mi of National Forest System trail. The figures here are pulled from the official US Forest Service trail data for Caribou-Targhee National Forest, covering the trail's mileage, tread, grade band, and the bike and e-bike uses the agency lists as designated. The tread is mapped as native material. USFS slope data puts it in the Advanced band (grade band +12-20%), meaning a steep climb — keep in mind this measures steepness, not trail technicality. Bike use is designated as allowed year-round. 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. For day-of certainty on closures or seasonal orders, check directly with the ranger district, since this reflects the USFS data as of the latest refresh.
Frequently asked questions
- Can you mountain bike on Upper Salt Basin?
- Yes. Mountain bikes are designated as allowed on Upper Salt Basin in Caribou-Targhee National Forest, year-round, per USFS data.
- Are e-bikes allowed on Upper Salt Basin?
- No e-bike class (1, 2 or 3) is designated on Upper Salt Basin in the USFS data.
- How long is Upper Salt Basin?
- Upper Salt Basin measures about 0.6 mi in total, summed across its mapped National Forest System segments.
- What is the surface of Upper Salt Basin?
- USFS data records the tread surface of Upper Salt Basin as native material.
- How difficult is Upper Salt Basin?
- 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 Caribou-Targhee National Forest (USFS trail geometry isn't mapped).
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