USFS National Forest System Trails · Updated June 2026
Washington Mountain Bike Trails
Across 5 national forests in Washington, USFS data maps 170 mi of bike-designated trail on 52 segments, led by Olympic National Forest (99.7 mi). Class 1 e-bikes are designated on 94 segments.
National forests in Washington
| National forest | Bike miles | Total trail | Class 1 e-bike |
|---|---|---|---|
| Olympic National Forest | 99.7 mi | 287 mi | 5 |
| Mt. Baker-Snoqualmie National Forest | 51.4 mi | 1,346 mi | 43 |
| Colville National Forest | 19.3 mi | 801 mi | 45 |
| Gifford Pinchot National Forest | 0 mi | 1,480 mi | 0 |
| Okanogan-Wenatchee National Forest | 0 mi | 5,391 mi | 1 |
E-bike rules in Washington
On Forest Service land e-bikes are motor vehicles, allowed only where designated. See Washington 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 Washington
The 30 longest ridable trails in Washington by mapped mileage. Each links to its full USFS data profile.
Washington bike-legal trail list (CSV)
Download every one of the 123 bike- and Class 1 e-bike-designated trails across Washington'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 Washington?
- About 170 mi of bike-designated trail across 5 national forests, from USFS travel-management data.
- Which national forest has the most mountain biking in Washington?
- Olympic National Forest, with about 99.7 mi of bike-designated trail.
- Are e-bikes allowed in Washington national forests?
- Only where designated — e-bikes are motor vehicles on Forest Service land. Class 1 access is recorded on 94 segments. See the Washington e-bike rules page.