Greenfield Triathlon
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Greenfield Triathlon : Greenfield, MA, Sunday August 2, 2026
The Greenfield Triathlon is a multi-discipline event held at the Green River swim area and on surrounding back roads. The course includes a river swim, a multi-loop bike course that passes the Eunice Williams covered bridge, and an out-and-back run on local roads with rolling terrain and farm scenery. The event offers both individual and team categories.
Distances and formats:
- International: Swim 0.63 miles, Bike 30.28 miles, Run 6.5 miles
- Sprint: Swim 0.31 miles, Bike 15.14 miles, Run 3.08 miles Both individual and two- or three-person team entries are available. Swim starts use age-wave waves on buoy-marked courses and organizers recommend wetsuits; wave intervals differ by distance.
This event is sanctioned by USA Triathlon. Age and entry rules include a minimum competing age of 10 on race day and a requirement for USAT membership or a one-day license. The 2026 race hosts the Massachusetts Senior Games and serves as a qualifying event for the National Senior Games; senior competitors must pre-register and medals for the senior games apply to Sprint finishers only.
Race operations include weekly water quality testing for the Green River; if water quality fails standards, the swim may be replaced by a short run. Race proceeds benefit the local recreation department. Visit the organization's website for the most recent information.
