New Castle’s Downvalley Dirty Dozen MTB
New Castle Trails’ 2026 Downvalley Dirty Dozen is a reimagining and celebration of trail running, mountain biking, music, and community. The weekend is full of fun, including live music from regional bluegrass bands, plus mountain biking and trail running races for all ability levels on the Colorow and Highlands trail networks. Racers can also enter […]