Harvest Moon Triathlon

MAY
31
2026
A long-running triathlon at Boulder Reservoir on May 31, 2026, featuring a half distance triathlon plus Olympic, sprint, aquabike, duathlon and relay options, with entry fees and a stated emphasis on participant safety.
Sun 31 May 2026
Sprint Triathlon Olympic Duathlon Olympic Distance Triathlo... Long Course Tri Long Course Duathlon

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Harvest Moon Triathlon 2026 : Boulder Reservoir

The Harvest Moon Triathlon returns for its 27th edition at Boulder Reservoir on May 31, 2026. Established in 2000, the event centers on a half distance triathlon and offers multiple race formats on the same day. The program includes long course, Olympic distance and sprint triathlon options, aquabike races at both long and Olympic distances, long course duathlon and corresponding relay categories.

The organizer presents the event as part of a regional series that stages races in Nevada, Utah and Colorado. The race director identifies safety as a primary concern for participants. The aquabike field is noted as a growing portion of the event, and the duathlon is described as Colorado's only long course duathlon.

Entry options list several fee levels. Individual event fees in the published offers fall between USD 130 and USD 220, while relay captain fees are listed up to USD 240; some relay team member entries are listed with no fee. The event takes place at a reservoir venue in Colorado and includes formats that serve both solo competitors and relay teams. Visit the organization's website for the most recent information.

Sprint Triathlon
Olympic Duathlon
Olympic Distance Triathlon
Long Course Tri
Long Course Duathlon
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