USFS National Forest System Trails · Superior National Forest · Minnesota · Updated June 2026
Swamper Snowmobile (USFS trail 21042) is a 11.3 mi trail in Superior National Forest, Minnesota. Mountain-bike use here is accepted but discouraged in USFS data, with Class 1 e-bikes also designated.
Can I bike Swamper Snowmobile?
| Use | Status | Season on record |
|---|---|---|
| Mountain bike | Accepted but discouraged | — |
| Class 1 e-bike (pedal-assist, 20 mph) | Allowed | May–Nov |
| Class 2 e-bike (throttle, 20 mph) | Allowed | May–Nov |
| Class 3 e-bike (pedal-assist, 28 mph) | Allowed | May–Nov |
Zooming out: across Superior National Forest, 22% of rideable trail miles are open to mountain bikes — a Bike Access Grade of D.
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About this trail
In Superior National Forest, Minnesota, Swamper Snowmobile (USFS trail 21042) covers 11.3 mi of National Forest System trail. 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. No grade band is recorded, so a steepness-based difficulty isn't available for this trail. Note that mountain-bike use here is discouraged in USFS records — confirm with the ranger district before riding. The record additionally permits Class 1, Class 2, Class 3 e-bike use, May–Nov; recall that Class 1 is pedal-assist, while Class 2 adds a throttle and Class 3 a higher cutoff 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. 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 Swamper Snowmobile?
- Mountain-bike use on Swamper Snowmobile 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 Swamper Snowmobile?
- Class 1, Class 2, Class 3 e-bikes are designated on Swamper Snowmobile in the USFS data.
- How long is Swamper Snowmobile?
- Swamper Snowmobile measures about 11.3 mi in total, summed across its mapped National Forest System segments.
- What is the surface of Swamper Snowmobile?
- USFS data records the tread surface of Swamper Snowmobile 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 Superior National Forest (USFS trail geometry isn't mapped).
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