USFS National Forest System Trails · Caribou-Targhee National Forest · Idaho · Updated June 2026
Big Bend Ridge Trail (USFS trail 2145) is a 16.4 mi trail in Caribou-Targhee National Forest, Idaho. Mountain bikes are designated as allowed year-round, with Class 1 e-bikes also designated.
Can I bike Big Bend Ridge Trail?
| Use | Status | Season on record |
|---|---|---|
| Mountain bike | Allowed | year-round |
| Class 1 e-bike (pedal-assist, 20 mph) | Allowed | Jun–Aug |
| Class 2 e-bike (throttle, 20 mph) | Allowed | Jun–Aug |
| Class 3 e-bike (pedal-assist, 28 mph) | Allowed | Jun–Aug |
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, Big Bend Ridge Trail (USFS trail 2145) covers 16.4 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. Underfoot, the trail is recorded as native material. Based on slope, this is a Easy trail (grade band +5-8%); that reflects gentle gradient and is not the same as a technical MTB difficulty rating. Mountain bikes are allowed, open year-round in the data. On the electric side, Class 1, Class 2, Class 3 e-bikes are also designated (Jun–Aug) — 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 Caribou-Targhee National Forest.
Frequently asked questions
- Can you mountain bike on Big Bend Ridge Trail?
- Yes. Mountain bikes are designated as allowed on Big Bend Ridge Trail in Caribou-Targhee National Forest, year-round, per USFS data.
- Are e-bikes allowed on Big Bend Ridge Trail?
- Class 1, Class 2, Class 3 e-bikes are designated on Big Bend Ridge Trail in the USFS data.
- How long is Big Bend Ridge Trail?
- Big Bend Ridge Trail measures about 16.4 mi in total, summed across its mapped National Forest System segments.
- What is the surface of Big Bend Ridge Trail?
- USFS data records the tread surface of Big Bend Ridge Trail as native material.
- How difficult is Big Bend Ridge Trail?
- Its grade-based difficulty is Easy (grade band +5-8%), 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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