The Great American Rail-Trail is a planned cross-country rail trail in the United States.

[1] The trail will run 3,700 miles (6,000 km) between Washington D.C. in the east and the state of Washington in the west.

The trail runs through 12 states and the District of Columbia,[a][2] and will be within 50 miles (80 km) of 50 million Americans.

[3] The work is being facilitated by Rails-to-Trails Conservancy.

[4] The Great American Rail-Trail is composed of over 150 existing multi-use trails with about 90 gaps to be filled.