The Des Moines Dirty Duathlon is Central Iowa Trails Association's annual mountain biking/trail running race held at Center Trails at Greenwood Park in Des Moines, Iowa.
100% of the proceeds go towards maintaining and building local singletrack trails in the Des Moines Metro.
The Course: Incorporating professionally built singletrack throughout Greenwood Park in Des Moines, the course takes you through an old growth forest, including super fun, flowy downhill, a creek crossing, and plenty of lung-busting climbing.
Start and Finish is typically near the Jay Spence Shelter at Greenwood Park near Bergman Academy.