USFS National Forest System Trails · Black Hills National Forest · South Dakota · Updated June 2026
Sun Up (USFS trail 54L) is a 0.9 mi trail in Black Hills National Forest, South Dakota. Mountain bikes are designated as allowed, Apr–Oct, with no Class 1 e-bike designation on record.
Can I bike Sun Up?
| Use | Status | Season on record |
|---|---|---|
| Mountain bike | Allowed | Apr–Oct |
| 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 Black Hills National Forest, 34% of rideable trail miles are open to mountain bikes — a Bike Access Grade of C.
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About this trail
Sun Up (USFS trail 54L) is a 0.9 mi trail in Black Hills National Forest, South Dakota. 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. USFS slope data puts it in the Intermediate band (grade band 10-12%), meaning a moderate climb — keep in mind this measures steepness, not trail technicality. Mountain bikes are allowed, with a Apr–Oct 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 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. 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 Sun Up?
- Yes. Mountain bikes are designated as allowed on Sun Up in Black Hills National Forest, typically Apr–Oct, per USFS data.
- Are e-bikes allowed on Sun Up?
- No e-bike class (1, 2 or 3) is designated on Sun Up in the USFS data.
- How long is Sun Up?
- Sun Up measures about 0.9 mi in total, summed across its mapped National Forest System segments.
- What is the surface of Sun Up?
- USFS data records the tread surface of Sun Up as native material.
- How difficult is Sun Up?
- Its grade-based difficulty is Intermediate (grade band 10-12%), 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 Black Hills National Forest (USFS trail geometry isn't mapped).
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