USFS National Forest System Trails · Eldorado National Forest · California · Updated June 2026
Union Valley Bike Trail (USFS trail 14E12) is a 6.7 mi trail in Eldorado National Forest, California. Mountain bikes are designated as allowed year-round, with no Class 1 e-bike designation on record.
Can I bike Union Valley Bike Trail?
| 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 | — |
This trail carries an accessibility designation in the USFS record.
Zooming out: across Eldorado National Forest, 94% of rideable trail miles are open to mountain bikes — a Bike Access Grade of A.
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About this trail
Union Valley Bike Trail (USFS trail 14E12) runs 6.7 mi through Eldorado National Forest in California. 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. The tread is mapped as ac- asphalt. Based on slope, this is a Easy trail (grade band 0-5%); that reflects gentle gradient and is not the same as a technical MTB difficulty rating. Mountain bikes are allowed, open year-round in the data. 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 5 on the agency's 1-to-5 development scale, where 1 is the most primitive, minimally maintained tread and 5 is the most developed, and the record carries an accessibility designation for this trail. Because conditions, closures, and local orders change between data refreshes, confirm the current status with the managing ranger district before you ride.
Frequently asked questions
- Can you mountain bike on Union Valley Bike Trail?
- Yes. Mountain bikes are designated as allowed on Union Valley Bike Trail in Eldorado National Forest, year-round, per USFS data.
- Are e-bikes allowed on Union Valley Bike Trail?
- No e-bike class (1, 2 or 3) is designated on Union Valley Bike Trail in the USFS data.
- How long is Union Valley Bike Trail?
- Union Valley Bike Trail measures about 6.7 mi in total, summed across its mapped National Forest System segments.
- What is the surface of Union Valley Bike Trail?
- USFS data records the tread surface of Union Valley Bike Trail as ac- asphalt.
- How difficult is Union Valley Bike Trail?
- Its grade-based difficulty is Easy (grade band 0-5%), 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 Eldorado National Forest (USFS trail geometry isn't mapped).
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