USFS National Forest System Trails · Pike and San Isabel National Forests · Colorado · Updated June 2026
Sheep Creek (USFS trail 645) is a 5.3 mi trail in Pike and San Isabel National Forests, Colorado. Mountain bikes are designated as allowed year-round, with no Class 1 e-bike designation on record.
Can I bike Sheep Creek?
| Use | Status | Season on record |
|---|---|---|
| Mountain bike | Allowed | year-round |
| Class 1 e-bike (pedal-assist, 20 mph) | — | |
| Class 2 e-bike (throttle, 20 mph) | — | |
| Class 3 e-bike (pedal-assist, 28 mph) | — |
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
Sheep Creek (USFS trail 645) is a 5.3 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. USFS records list its surface as native material. Based on slope, this is a Intermediate trail (grade band +10-12%); that reflects moderate gradient and is not the same as a technical MTB difficulty rating. Mountain bikes are allowed, open year-round in the data. The agency lists no Class 1, 2 or 3 e-bike designation here; absent a local order to the contrary, that means e-bikes are not an allowed use on this trail. The route is mapped as USFS Trail Class 1 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 Pike and San Isabel National Forests.
Frequently asked questions
- Can you mountain bike on Sheep Creek?
- Yes. Mountain bikes are designated as allowed on Sheep Creek in Pike and San Isabel National Forests, year-round, per USFS data.
- Are e-bikes allowed on Sheep Creek?
- No e-bike class (1, 2 or 3) is designated on Sheep Creek in the USFS data.
- How long is Sheep Creek?
- Sheep Creek measures about 5.3 mi in total, summed across its mapped National Forest System segments.
- What is the surface of Sheep Creek?
- USFS data records the tread surface of Sheep Creek as native material.
- How difficult is Sheep Creek?
- Its grade-based difficulty is Intermediate (grade band +10-12%), derived from USFS slope data. This reflects steepness, not technical mountain-bike difficulty.
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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