USFS National Forest System Trails · Sawtooth National Forest · Idaho · Updated June 2026
Miller Fence Jeep (USFS trail 7989) is a 3.7 mi trail in Sawtooth National Forest, Idaho. Mountain bikes are designated as allowed year-round, with Class 1 e-bikes also designated.
Can I bike Miller Fence Jeep?
| 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 Sawtooth 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
In Sawtooth National Forest, Idaho, Miller Fence Jeep (USFS trail 7989) covers 3.7 mi of National Forest System trail. 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. Its grade-based difficulty is Easy (grade band 5-8%) — a gentle steepness profile derived from USFS slope data, not a technical mountain-bike 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 — 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 Sawtooth National Forest.
Frequently asked questions
- Can you mountain bike on Miller Fence Jeep?
- Yes. Mountain bikes are designated as allowed on Miller Fence Jeep in Sawtooth National Forest, year-round, per USFS data.
- Are e-bikes allowed on Miller Fence Jeep?
- Class 1, Class 2, Class 3 e-bikes are designated on Miller Fence Jeep in the USFS data.
- How long is Miller Fence Jeep?
- Miller Fence Jeep measures about 3.7 mi in total, summed across its mapped National Forest System segments.
- What is the surface of Miller Fence Jeep?
- USFS data records the tread surface of Miller Fence Jeep as native material.
- How difficult is Miller Fence Jeep?
- 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 Sawtooth National Forest (USFS trail geometry isn't mapped).
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