USFS National Forest System Trails · San Juan National Forest · Colorado · Updated June 2026
Arbogas Loop (USFS trail 696) is a 1.7 mi trail in San Juan National Forest, Colorado. Mountain-bike use here is accepted but discouraged in USFS data, with Class 1 e-bikes also designated.
Can I bike Arbogas Loop?
| Use | Status | Season on record |
|---|---|---|
| Mountain bike | Accepted but discouraged | — |
| Class 1 e-bike (pedal-assist, 20 mph) | Allowed | May–Dec |
| Class 2 e-bike (throttle, 20 mph) | Allowed | May–Dec |
| Class 3 e-bike (pedal-assist, 28 mph) | Allowed | May–Dec |
Zooming out: across San Juan National Forest, 29% of rideable trail miles are open to mountain bikes — a Bike Access Grade of C.
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About this trail
In San Juan National Forest, Colorado, Arbogas Loop (USFS trail 696) covers 1.7 mi of National Forest System trail. 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. USFS records list its surface as native material. Based on slope, this is a Easy trail (grade band +5-8%); that reflects gentle gradient and is not the same as a technical MTB difficulty rating. 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 (May–Dec) — Class 1 being pedal-assist only, Classes 2 and 3 adding a throttle and higher assisted speed. 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 Arbogas Loop?
- Mountain-bike use on Arbogas Loop 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 Arbogas Loop?
- Class 1, Class 2, Class 3 e-bikes are designated on Arbogas Loop in the USFS data.
- How long is Arbogas Loop?
- Arbogas Loop measures about 1.7 mi in total, summed across its mapped National Forest System segments.
- What is the surface of Arbogas Loop?
- USFS data records the tread surface of Arbogas Loop as native material.
- How difficult is Arbogas Loop?
- 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 San Juan National Forest (USFS trail geometry isn't mapped).
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