USFS National Forest System Trails · Black Hills National Forest · South Dakota · Updated June 2026
Newton 13 (USFS trail 6913) is a 0.6 mi trail in Black Hills National Forest, South Dakota. Mountain-bike use here is accepted but discouraged in USFS data, with Class 1 e-bikes also designated.
Can I bike Newton 13?
| Use | Status | Season on record |
|---|---|---|
| Mountain bike | Accepted but discouraged | — |
| Class 1 e-bike (pedal-assist, 20 mph) | Allowed | year-round |
| Class 2 e-bike (throttle, 20 mph) | Allowed | year-round |
| Class 3 e-bike (pedal-assist, 28 mph) | Allowed | year-round |
Zooming out: across Black Hills National Forest, 34% of rideable trail miles are open to mountain bikes — a Bike Access Grade of C.
Watch Black Hills National Forest for access changes
Email me when USFS mountain-bike or e-bike designations change for trails in Black Hills National Forest. Free, unsubscribe anytime.
About this trail
Newton 13 (USFS trail 6913) is a 0.6 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. The tread is mapped 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 — 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 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 Newton 13?
- Mountain-bike use on Newton 13 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 Newton 13?
- Class 1, Class 2, Class 3 e-bikes are designated on Newton 13 in the USFS data.
- How long is Newton 13?
- Newton 13 measures about 0.6 mi in total, summed across its mapped National Forest System segments.
- What is the surface of Newton 13?
- USFS data records the tread surface of Newton 13 as native material.
- How difficult is Newton 13?
- 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 Black Hills National Forest (USFS trail geometry isn't mapped).
Where to stay near Black Hills National Forest
Find hotels, cabins, and vacation rentals near Black Hills National Forest — plan your ride.
Top-rated places to stay near Black Hills National Forest
Availability and prices from Stay22 partners (Booking.com, Vrbo, Expedia). We may earn a commission from bookings, at no extra cost to you.
Riding Black Hills National Forest?
Trail-access updates and trip ideas by email.