The signature event of the Dirty Kanza is a 200-mile ultra-endurance bicycling challenge, held on the gravel roads through the Flint Hills region of east-central Kansas. Participants leave the starting line under police escort at 6:00 am.
Additional races include 100-mile, 50-mile, 25-mile fun ride, High School ride, and the DKXL a 350-mile ultra-endurance challenge. This extreme challenge is reserved solely for the hardiest of gravel enthusiasts. Participation is limited and by application only.