Updated October 2026
South Dakota Mountain Bike Trails
Mountain bike
255mi
designated on 92 segments
19% of mapped trail
E-bike
545miClass 1
designated on 317 segments
41% of mapped trail
Mountain bike
255mi
designated on 92 segments
19% of mapped trail
E-bike
545miClass 1
designated on 317 segments
- Class 1545 mi
- Class 2545 mi
- Class 3545 mi
Treated as a motor vehicle: ridden only where designated.
- National forests
- 1
- Ridable trails
- 325
Both lanes share one scale: the 1,334 mi of National Forest System trail mapped in South Dakota's 1 national forests. From USFS National Forest System Trails records, updated October 2026.
Across 1 national forests in South Dakota, USFS data maps 255 mi of bike-designated trail on 92 segments, led by Black Hills National Forest (255 mi). Class 1 e-bikes are designated on 317 segments.
National forests in South Dakota
| National forest | Bike miles | Total trail | Class 1 e-bike |
|---|---|---|---|
| Black Hills National Forest | 255 mi | 1,334 mi | 317 |
E-bike rules in South Dakota
On Forest Service land e-bikes are motor vehicles, allowed only where designated. See South Dakota e-bike rules by class and forest →
Browse by grade-based difficulty
Steepness bands derived from the USFS grade field — a slope measure, not a technical mountain-bike rating.
Top trails in South Dakota
The 30 longest ridable trails in South Dakota by mapped mileage. Each links to its full USFS data profile.
South Dakota bike-legal trail list (CSV)
Download every one of the 325 bike- and Class 1 e-bike-designated trails across South Dakota's national forests — miles, surface, grade, season, and e-bike class per trail, from official USFS data.
Frequently asked questions
- How many miles of national-forest mountain bike trail are in South Dakota?
- About 255 mi of bike-designated trail across 1 national forests, from USFS travel-management data.
- Which national forest has the most mountain biking in South Dakota?
- Black Hills National Forest, with about 255 mi of bike-designated trail.
- Are e-bikes allowed in South Dakota national forests?
- Only where designated — e-bikes are motor vehicles on Forest Service land. Class 1 access is recorded on 317 segments. See the South Dakota e-bike rules page.