USFS National Forest System Trails · San Juan National Forest · Colorado · Updated June 2026
Blue Jay (USFS trail 233) is a 4.4 mi trail in San Juan National Forest, Colorado. Mountain bikes are designated as allowed, Apr–Nov, with no Class 1 e-bike designation on record.
Can I bike Blue Jay?
| Use | Status | Season on record |
|---|---|---|
| Mountain bike | Allowed | Apr–Nov |
| 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 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
Blue Jay (USFS trail 233) is a 4.4 mi trail in San Juan National Forest, 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. Underfoot, the trail is recorded 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. Mountain bikes are allowed, with a Apr–Nov season 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 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 Blue Jay?
- Yes. Mountain bikes are designated as allowed on Blue Jay in San Juan National Forest, typically Apr–Nov, per USFS data.
- Are e-bikes allowed on Blue Jay?
- No e-bike class (1, 2 or 3) is designated on Blue Jay in the USFS data.
- How long is Blue Jay?
- Blue Jay measures about 4.4 mi in total, summed across its mapped National Forest System segments.
- What is the surface of Blue Jay?
- USFS data records the tread surface of Blue Jay as native material.
- How difficult is Blue Jay?
- 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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