USFS National Forest System Trails · Stanislaus National Forest · California · Updated June 2026
Mud Lake (USFS trail 19E27) is a 1.8 mi trail in Stanislaus National Forest, California. Mountain bikes are designated as allowed year-round, with no Class 1 e-bike designation on record.
Can I bike Mud Lake?
| 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 Stanislaus National Forest, 84% of rideable trail miles are open to mountain bikes — a Bike Access Grade of A.
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About this trail
Mud Lake (USFS trail 19E27) runs 1.8 mi through Stanislaus 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. The tread is mapped 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 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 Mud Lake?
- Yes. Mountain bikes are designated as allowed on Mud Lake in Stanislaus National Forest, year-round, per USFS data.
- Are e-bikes allowed on Mud Lake?
- No e-bike class (1, 2 or 3) is designated on Mud Lake in the USFS data.
- How long is Mud Lake?
- Mud Lake measures about 1.8 mi in total, summed across its mapped National Forest System segments.
- What is the surface of Mud Lake?
- USFS data records the tread surface of Mud Lake as native material.
- How difficult is Mud Lake?
- 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 Stanislaus National Forest (USFS trail geometry isn't mapped).
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