Lace up for a full day of trail running on June 20, 2026, when the Indiana Trail Running Association hosts this free event for members at Brown County State Park in Nashville, IN. You'll have eight hours (8 a.m. to 4 p.m.) to tackle the challenging single-track loops as many times as you can manage, with aid stations keeping you fueled and optional camping available from Friday evening through Sunday noon. Compete for the "Garmin Challenge" award by logging the most GPS miles, plus enjoy meals, campfire hangouts, and camaraderie with other trail runners—all while supporting the nonprofit's mission.