USFS National Forest System Trails · Bridger-Teton National Forest · Wyoming · Updated June 2026
Sink Or Swim (USFS trail 4031) is a 2.2 mi trail in Bridger-Teton National Forest, Wyoming. Mountain bikes are designated as allowed, May–Oct, with no Class 1 e-bike designation on record.
Can I bike Sink Or Swim?
| Use | Status | Season on record |
|---|---|---|
| Mountain bike | Allowed | May–Oct |
| 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 Bridger-Teton National Forest, 53% of rideable trail miles are open to mountain bikes — a Bike Access Grade of B.
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About this trail
In Bridger-Teton National Forest, Wyoming, Sink Or Swim (USFS trail 4031) covers 2.2 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. Underfoot, the trail is recorded as native material. No grade band is recorded, so a steepness-based difficulty isn't available for this trail. Mountain bikes are allowed, with a May–Oct 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 Sink Or Swim?
- Yes. Mountain bikes are designated as allowed on Sink Or Swim in Bridger-Teton National Forest, typically May–Oct, per USFS data.
- Are e-bikes allowed on Sink Or Swim?
- No e-bike class (1, 2 or 3) is designated on Sink Or Swim in the USFS data.
- How long is Sink Or Swim?
- Sink Or Swim measures about 2.2 mi in total, summed across its mapped National Forest System segments.
- What is the surface of Sink Or Swim?
- USFS data records the tread surface of Sink Or Swim 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 Bridger-Teton National Forest (USFS trail geometry isn't mapped).
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