USFS National Forest System Trails · Bridger-Teton National Forest · Wyoming · Updated June 2026
Dalls Lake Spur (USFS trail 4300A) is a 1.2 mi trail in Bridger-Teton National Forest, Wyoming. Mountain-bike use here is accepted but discouraged in USFS data, with Class 1 e-bikes also designated.
Can I bike Dalls Lake Spur?
| Use | Status | Season on record |
|---|---|---|
| Mountain bike | Accepted but discouraged | — |
| Class 1 e-bike (pedal-assist, 20 mph) | Allowed | Jul–Nov |
| Class 2 e-bike (throttle, 20 mph) | Allowed | Jul–Nov |
| Class 3 e-bike (pedal-assist, 28 mph) | Allowed | Jul–Nov |
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
Dalls Lake Spur (USFS trail 4300A) runs 1.2 mi through Bridger-Teton National Forest in Wyoming. 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. USFS records list its surface as native material. No grade band is recorded, so a steepness-based difficulty isn't available for this trail. For traditional mountain bikes, use is discouraged according to USFS data. On the electric side, Class 1, Class 2, Class 3 e-bikes are also designated (Jul–Nov) — Class 1 being pedal-assist only, Classes 2 and 3 adding a throttle and higher assisted speed. The route is mapped as USFS Trail Class 4 on the agency's 1-to-5 development scale, where 1 is the most primitive, minimally maintained tread and 5 is the most developed. Treat this as a planning reference rather than a live conditions report, and verify any time-sensitive closure or order with the ranger district that manages Bridger-Teton National Forest.
Frequently asked questions
- Can you mountain bike on Dalls Lake Spur?
- Mountain-bike use on Dalls Lake Spur 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 Dalls Lake Spur?
- Class 1, Class 2, Class 3 e-bikes are designated on Dalls Lake Spur in the USFS data.
- How long is Dalls Lake Spur?
- Dalls Lake Spur measures about 1.2 mi in total, summed across its mapped National Forest System segments.
- What is the surface of Dalls Lake Spur?
- USFS data records the tread surface of Dalls Lake Spur 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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