USFS National Forest System Trails · Apache-Sitgreaves National Forests · Arizona · Updated October 2026
Los Caballos (USFS trail 638) is a 15.9 mi trail in Apache-Sitgreaves National Forests, Arizona. Mountain bikes are designated as allowed year-round, with no Class 1 e-bike designation on record.
- Trail length
- 15.9 mi
- Grade-based difficulty
- Advancedgrade band +12-20%
- Surface
- Native Material
- USFS trail class
- Class 31 primitive · 5 developed
Can I bike Los Caballos?
| Use | Status | Season on record |
|---|---|---|
| Mountain bike | Allowed | year-round |
| 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 Apache-Sitgreaves National Forests, 77% of rideable trail miles are open to mountain bikes — a Bike Access Grade of A.
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About this trail
Los Caballos (USFS trail 638) is a 15.9 mi trail in Apache-Sitgreaves National Forests, Arizona. The figures here are pulled from the official US Forest Service trail data for Apache-Sitgreaves 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. Based on slope, this is a Advanced trail (grade band +12-20%); that reflects steep gradient and is not the same as a technical MTB difficulty rating. Bike use is designated as allowed year-round. 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 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 Los Caballos?
- Yes. Mountain bikes are designated as allowed on Los Caballos in Apache-Sitgreaves National Forests, year-round, per USFS data.
- Are e-bikes allowed on Los Caballos?
- No e-bike class (1, 2 or 3) is designated on Los Caballos in the USFS data.
- How long is Los Caballos?
- Los Caballos measures about 15.9 mi in total, summed across its mapped National Forest System segments.
- What is the surface of Los Caballos?
- USFS data records the tread surface of Los Caballos as native material.
- How difficult is Los Caballos?
- 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 Apache-Sitgreaves National Forests (USFS trail geometry isn't mapped).
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