USFS National Forest System Trails · Siuslaw National Forest · Oregon · Updated June 2026
Summit Loop (USFS trail 1388) is a 0.9 mi trail in Siuslaw National Forest, Oregon. Mountain bikes are designated as allowed, Apr–Nov, with no Class 1 e-bike designation on record.
Can I bike Summit Loop?
| Use | Status | Season on record |
|---|---|---|
| Mountain bike | Allowed | Apr–Nov |
| Class 1 e-bike (pedal-assist, 20 mph) | Restricted | — |
| Class 2 e-bike (throttle, 20 mph) | Restricted | — |
| Class 3 e-bike (pedal-assist, 28 mph) | Restricted | — |
Zooming out: across Siuslaw National Forest, 27% of rideable trail miles are open to mountain bikes — a Bike Access Grade of C.
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About this trail
Summit Loop (USFS trail 1388) runs 0.9 mi through Siuslaw National Forest in Oregon. 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. The tread is mapped as native material. Its grade-based difficulty is Intermediate (grade band 10-12%) — a moderate steepness profile derived from USFS slope data, not a technical mountain-bike rating. Mountain bikes are allowed, with a Apr–Nov season in the data. 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 Summit Loop?
- Yes. Mountain bikes are designated as allowed on Summit Loop in Siuslaw National Forest, typically Apr–Nov, per USFS data.
- Are e-bikes allowed on Summit Loop?
- No e-bike class (1, 2 or 3) is designated on Summit Loop in the USFS data.
- How long is Summit Loop?
- Summit Loop measures about 0.9 mi in total, summed across its mapped National Forest System segments.
- What is the surface of Summit Loop?
- USFS data records the tread surface of Summit Loop as native material.
- How difficult is Summit Loop?
- Its grade-based difficulty is Intermediate (grade band 10-12%), 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 Siuslaw National Forest (USFS trail geometry isn't mapped).
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