Though they may feel completely remote, the Back 40 Trails offer truly world-class mountain biking just a few minutes away from the main drag in Bella Vista and Bentonville, AR. Not just for mountain biking, the Back 40 is suitable in many places for both trail running and hiking as well. The trails meander through deep woods and feature waterfalls, bluffs and creeks. For this Design + Build project, Progressive Trail Design built 22 miles of the 40 mile-system.