USFS National Forest System Trails · Kaibab National Forest · Arizona · Updated June 2026
Rainbow Rim (USFS trail 10) is a 26.3 mi trail in Kaibab National Forest, Arizona. Mountain bikes are designated as allowed, Mar–Nov, with no Class 1 e-bike designation on record.
Can I bike Rainbow Rim?
| Use | Status | Season on record |
|---|---|---|
| Mountain bike | Allowed | Mar–Nov |
| 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 Kaibab National Forest, 48% of rideable trail miles are open to mountain bikes — a Bike Access Grade of B.
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About this trail
Rainbow Rim (USFS trail 10) runs 26.3 mi through Kaibab National Forest in Arizona. Everything below comes straight from the US Forest Service National Forest System Trails dataset — length, surface, slope-derived difficulty, and the specific bike and e-bike designations on record — so you can check legality before you load up. Underfoot, the trail is recorded as native material. Its grade-based difficulty is Advanced (grade band 12-20%) — a steep steepness profile derived from USFS slope data, not a technical mountain-bike rating. Bike use is designated as allowed, typically Mar–Nov. No e-bike class (1, 2 or 3) is designated on this trail in the USFS data, so treat it as a non-motorized route unless a posted order says otherwise. 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. 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 Rainbow Rim?
- Yes. Mountain bikes are designated as allowed on Rainbow Rim in Kaibab National Forest, typically Mar–Nov, per USFS data.
- Are e-bikes allowed on Rainbow Rim?
- No e-bike class (1, 2 or 3) is designated on Rainbow Rim in the USFS data.
- How long is Rainbow Rim?
- Rainbow Rim measures about 26.3 mi in total, summed across its mapped National Forest System segments.
- What is the surface of Rainbow Rim?
- USFS data records the tread surface of Rainbow Rim as native material.
- How difficult is Rainbow Rim?
- Its grade-based difficulty is Advanced (grade band 12-20%), 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 Kaibab National Forest (USFS trail geometry isn't mapped).
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