USFS National Forest System Trails · Shasta-Trinity National Forest · California · Updated June 2026
Rough Gulch (USFS trail 12W37) is a 4.3 mi trail in Shasta-Trinity National Forest, California. Mountain bikes are designated as allowed year-round, with no Class 1 e-bike designation on record.
Can I bike Rough Gulch?
| Use | Status | Season on record |
|---|---|---|
| Mountain bike | Allowed | year-round |
| Class 1 e-bike (pedal-assist, 20 mph) | — | |
| Class 2 e-bike (throttle, 20 mph) | — | |
| Class 3 e-bike (pedal-assist, 28 mph) | — |
Zooming out: across Shasta-Trinity National Forest, 77% of rideable trail miles are open to mountain bikes — a Bike Access Grade of A.
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About this trail
Rough Gulch (USFS trail 12W37) runs 4.3 mi through Shasta-Trinity National Forest in California. 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. Its grade-based difficulty is Advanced (grade band 12-20%) — a steep steepness profile derived from USFS slope data, not a technical mountain-bike rating. Bike use is designated as allowed year-round. 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 1 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 Rough Gulch?
- Yes. Mountain bikes are designated as allowed on Rough Gulch in Shasta-Trinity National Forest, year-round, per USFS data.
- Are e-bikes allowed on Rough Gulch?
- No e-bike class (1, 2 or 3) is designated on Rough Gulch in the USFS data.
- How long is Rough Gulch?
- Rough Gulch measures about 4.3 mi in total, summed across its mapped National Forest System segments.
- What is the surface of Rough Gulch?
- USFS data records the tread surface of Rough Gulch as native material.
- How difficult is Rough Gulch?
- Its grade-based difficulty is Advanced (grade band 12-20%), 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 Shasta-Trinity National Forest (USFS trail geometry isn't mapped).
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