| Willapa Hills Trail | |
|---|---|
 Northern Pacific Railway Newaukum River Bridge over the Newaukum River, near the Chehalis trailhead | |
| Length | 56 miles (90 km) |
| Location | Lewis County, Washington |
| Began construction | 1993 |
| Use | Hiking, Biking, Horse riding |
| Elevation change | Minimal |
| Difficulty | Easy to moderate |
| Hazards | Incomplete portions in Pacific County |
| Surface | Paved, gravel |
| Maintained by | Washington State Parks and Recreation Commission |
| Website | WA State Parks - Willapa Hills Trail |
The Willapa Hills Trail is a 56.0-mile (90.1 km) intercounty rail trail in the U.S. state of Washington that is part of the Willapa Hills State Park. Following an east–west route alongside State Route 6, the tract links Chehalis and South Bend, traveling through or near several small towns and parks along the way. Overseen by the Washington State Parks and Recreation Commission, local cities and towns often maintain areas of the trail within their jurisdictions. The trail is built upon a decommissioned railroad track.