USFS National Forest System Trails · Pike and San Isabel National Forests · Colorado · Updated June 2026
Breakneck Pass Trail (USFS trail 175) is a 3.4 mi trail in Pike and San Isabel National Forests, Colorado. Mountain-bike use here is accepted but discouraged in USFS data, with Class 1 e-bikes also designated.
Can I bike Breakneck Pass Trail?
| Use | Status | Season on record |
|---|---|---|
| Mountain bike | Accepted but discouraged | — |
| Class 1 e-bike (pedal-assist, 20 mph) | Allowed | Jun–Dec |
| Class 2 e-bike (throttle, 20 mph) | Allowed | Jun–Dec |
| Class 3 e-bike (pedal-assist, 28 mph) | Allowed | Jun–Dec |
Zooming out: across Pike and San Isabel National Forests, 51% of rideable trail miles are open to mountain bikes — a Bike Access Grade of B.
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About this trail
Breakneck Pass Trail (USFS trail 175) is a 3.4 mi trail in Pike and San Isabel National Forests, Colorado. 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 trail surface is not specified in the USFS record. 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 (Jun–Dec) — Class 1 being pedal-assist only, Classes 2 and 3 adding a throttle and higher assisted speed. Its USFS Trail Class (the agency's 1-to-5 development rating) isn't recorded for this segment. 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 Breakneck Pass Trail?
- Mountain-bike use on Breakneck Pass Trail 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 Breakneck Pass Trail?
- Class 1, Class 2, Class 3 e-bikes are designated on Breakneck Pass Trail in the USFS data.
- How long is Breakneck Pass Trail?
- Breakneck Pass Trail measures about 3.4 mi in total, summed across its mapped National Forest System segments.
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 Pike and San Isabel National Forests (USFS trail geometry isn't mapped).
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