USFS National Forest System Trails · Deschutes National Forest · Oregon · Updated June 2026
Three Trails Ohv #39 (USFS trail 91039) is a 5.2 mi trail in Deschutes National Forest, Oregon. Mountain-bike use here is accepted but discouraged in USFS data, with Class 1 e-bikes also designated.
Can I bike Three Trails Ohv #39?
| Use | Status | Season on record |
|---|---|---|
| Mountain bike | Accepted but discouraged | — |
| 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 Deschutes National Forest, 59% of rideable trail miles are open to mountain bikes — a Bike Access Grade of B.
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About this trail
Three Trails Ohv #39 (USFS trail 91039) runs 5.2 mi through Deschutes National Forest in Oregon. 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. Underfoot, the trail is recorded as native material. No grade band is recorded, so a steepness-based difficulty isn't available for this trail. For traditional mountain bikes, use is discouraged according to USFS data. On the electric side, Class 1, Class 2, Class 3 e-bikes are also designated — 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 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 Deschutes National Forest.
Frequently asked questions
- Can you mountain bike on Three Trails Ohv #39?
- Mountain-bike use on Three Trails Ohv #39 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 Three Trails Ohv #39?
- Class 1, Class 2, Class 3 e-bikes are designated on Three Trails Ohv #39 in the USFS data.
- How long is Three Trails Ohv #39?
- Three Trails Ohv #39 measures about 5.2 mi in total, summed across its mapped National Forest System segments.
- What is the surface of Three Trails Ohv #39?
- USFS data records the tread surface of Three Trails Ohv #39 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 Deschutes National Forest (USFS trail geometry isn't mapped).
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