The Dirty Dozen is back again in 2025 and we are offering the same amazing mountain bike and trail running races plus free kids races on the Colorow and Highland Trail System Networks.
Race entries are:
$75 for Dirty Dozen MTB Race ($85 day of)
$65 for Dirty Half Dozen MTB Race ($75 day of)
$65 for Dirty Dozen Trail Running Race ($75 day of)
50% discount for High School age and younger racers: please enter Promo Code: "Race-Student" during checkout!
Course Map - 10k Trail Race
