USFS National Forest System Trails · Bridger-Teton National Forest · Wyoming · Updated June 2026
Big Munger (USFS trail 4205) is a 7.3 mi trail in Bridger-Teton National Forest, Wyoming. Mountain bikes are designated as allowed, May–Oct, with Class 1 e-bikes also designated.
Can I bike Big Munger?
| Use | Status | Season on record |
|---|---|---|
| Mountain bike | Allowed | May–Oct |
| Class 1 e-bike (pedal-assist, 20 mph) | Allowed | Jul–Sep |
| Class 2 e-bike (throttle, 20 mph) | Allowed | Jul–Sep |
| Class 3 e-bike (pedal-assist, 28 mph) | Allowed | Jul–Sep |
Zooming out: across Bridger-Teton National Forest, 53% of rideable trail miles are open to mountain bikes — a Bike Access Grade of B.
Watch Bridger-Teton National Forest for access changes
Email me when USFS mountain-bike or e-bike designations change for trails in Bridger-Teton National Forest. Free, unsubscribe anytime.
About this trail
Big Munger (USFS trail 4205) runs 7.3 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. Mountain bikes are allowed, with a May–Oct season in the data. On the electric side, Class 1, Class 2, Class 3 e-bikes are also designated (Jul–Sep) — 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 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. Because conditions, closures, and local orders change between data refreshes, confirm the current status with the managing ranger district before you ride.
Frequently asked questions
- Can you mountain bike on Big Munger?
- Yes. Mountain bikes are designated as allowed on Big Munger in Bridger-Teton National Forest, typically May–Oct, per USFS data.
- Are e-bikes allowed on Big Munger?
- Class 1, Class 2, Class 3 e-bikes are designated on Big Munger in the USFS data.
- How long is Big Munger?
- Big Munger measures about 7.3 mi in total, summed across its mapped National Forest System segments.
- What is the surface of Big Munger?
- USFS data records the tread surface of Big Munger 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).
Where to stay near Bridger-Teton National Forest
Find hotels, cabins, and vacation rentals near Bridger-Teton National Forest — plan your ride.
Top-rated places to stay near Bridger-Teton National Forest
Availability and prices from Stay22 partners (Booking.com, Vrbo, Expedia). We may earn a commission from bookings, at no extra cost to you.
Riding Bridger-Teton National Forest?
Trail-access updates and trip ideas by email.