Experience the scenic beauty of Greenbrier State Park in Boonsboro, MD, with the 8-hour Ultra Challenge and 5.22 Mile Trail Run. The challenging 5.22-mile loop features a total elevation change of 750 feet, weaving primarily through single-track paths and a small stretch of pavement alongside Greenbrier Lake. Designed for both trail running newcomers and seasoned athletes, the Ultra Challenge encourages participants to complete as many loops as possible within 8 hours, with a goal of eight loops for the ultimate achievement. Families can enjoy the beach while you tackle the trails, making it a perfect outdoor day for all.