The Washington Backcountry Discovery Route is a 600-mile (970 km), mostly off-road trail traversing the Cascade Mountains in the U.S. state of Washington. The entire route is double track suitable for motorized users (four-wheel drive automobile or dual-sport motorcycle) and non-motorized users (mountain bike). The route was created by Bryce Stevens and Andrew Cull.
Backcountry Discovery Routes is a 501(c)(4) education and advocacy non-profit that supports off-road route development and dissemination of route information to riders on the Washington Backcountry Route and others in Utah, Colorado, Arizona and Idaho. The Oregon route, 150 miles (240 km) longer than Washington's, was created in the late 1990s by the Oregon Off Highway Vehicle Association.