USFS National Forest System Trails · Boise National Forest · Idaho · Updated June 2026
Airline (USFS trail 038006) is a 10.1 mi trail in Boise National Forest, Idaho. Mountain bikes are designated as allowed year-round, with Class 1 e-bikes also designated.
Can I bike Airline?
| Use | Status | Season on record |
|---|---|---|
| Mountain bike | Allowed | year-round |
| 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 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
Airline (USFS trail 038006) is a 10.1 mi trail in Boise National Forest, Idaho. Everything below comes straight from the US Forest Service National Forest System Trails dataset — length, surface, slope-derived difficulty, and the specific bike and e-bike designations on record — so you can check legality before you load up. Underfoot, the trail is recorded 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. The record additionally permits Class 1, Class 2, Class 3 e-bike use; recall that Class 1 is pedal-assist, while Class 2 adds a throttle and Class 3 a higher cutoff 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. 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 Airline?
- Yes. Mountain bikes are designated as allowed on Airline in Boise National Forest, year-round, per USFS data.
- Are e-bikes allowed on Airline?
- Class 1, Class 2, Class 3 e-bikes are designated on Airline in the USFS data.
- How long is Airline?
- Airline measures about 10.1 mi in total, summed across its mapped National Forest System segments.
- What is the surface of Airline?
- USFS data records the tread surface of Airline 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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