USFS National Forest System Trails · Arapaho and Roosevelt National Forests · Colorado · Updated June 2026
Granite Ridge (USFS trail 991) is a 7.2 mi trail in Arapaho and Roosevelt National Forests, Colorado. Mountain bikes are designated as allowed, Jul–Oct, with no Class 1 e-bike designation on record.
Can I bike Granite Ridge?
| Use | Status | Season on record |
|---|---|---|
| Mountain bike | Allowed | Jul–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 Arapaho and Roosevelt National Forests, 99% of rideable trail miles are open to mountain bikes — a Bike Access Grade of A.
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About this trail
In Arapaho and Roosevelt National Forests, Colorado, Granite Ridge (USFS trail 991) covers 7.2 mi of National Forest System trail. The figures here are pulled from the official US Forest Service trail data for Arapaho and Roosevelt National Forests, covering the trail's mileage, tread, grade band, and the bike and e-bike uses the agency lists as designated. The tread is mapped as native material. Its grade-based difficulty is Easy (grade band +5-8%) — a gentle steepness profile derived from USFS slope data, not a technical mountain-bike rating. Bike use is designated as allowed, typically Jul–Oct. 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 2 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 Granite Ridge?
- Yes. Mountain bikes are designated as allowed on Granite Ridge in Arapaho and Roosevelt National Forests, typically Jul–Oct, per USFS data.
- Are e-bikes allowed on Granite Ridge?
- No e-bike class (1, 2 or 3) is designated on Granite Ridge in the USFS data.
- How long is Granite Ridge?
- Granite Ridge measures about 7.2 mi in total, summed across its mapped National Forest System segments.
- What is the surface of Granite Ridge?
- USFS data records the tread surface of Granite Ridge as native material.
- How difficult is Granite Ridge?
- Its grade-based difficulty is Easy (grade band +5-8%), 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 Arapaho and Roosevelt National Forests (USFS trail geometry isn't mapped).
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