Harvest Moon Triathlon 2025. The 26th edition of this event takes place at the beautiful boulder reservoir on september 13th, 2025 and we couldn't be more excited to be back for another year. The long course triathlon is a 1.2 mile swim in the crystal clear waters of.
In 2000 this colorado classic provides the veterans to beginners a challenging, affordable, and competitive race with a local flavor. 5k / 10k / half marathon.