Massachusetts
Massachusetts Triathlon Calendar 2025-2026
Monthly updates for Massachusetts
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Explore the best triathlons in Massachusetts for 2025-2026! Our updated list features 17 exciting races across the region. Find your next race in Massachusetts below and join the running community at these great events!
March 2026
Join the first annual Cape Cod Indoor Triathlon at the YMCA in Hyannis on Sunday March 8. Swim, bike and run on facility equipment in timed 15, 25 and 20 minute segments; spots are limited.
May 2026
Kick off your season at the New England Season Opener in scenic Hopkinton State Park, with sprint triathlon and duathlon races plus team options. Enjoy a custom finisher medal, BBQ, soft shirt and live results for a fun early season challenge.
June 2026
A scenic sprint tri at Long Pond in Wellfleet with a kettle pond swim and paved bike and run through pine forest. Choose individual, relay or virtual entry while supporting local community causes.
IRONMAN 70.3 Western Massachusetts in Springfield blends a current assisted Connecticut River swim, a hilly bike through the Berkshires and a flat finish in downtown. Scenic early season New England racing with World Championship qualifying.
Race the Harvest Triathlon in Wareham MA on June 7, 2026 with sprint and Olympic options through scenic cranberry bogs. A calm spring fed swim, single loop bike and packed dirt run make for a fast friendly USAT sanctioned event.
Push your limits at the Bare Hill Sprint Triathlon, Duathlon and Aquabike in Harvard MA on June 7, 2026 with short, fast swim, bike and run courses perfect for speedy finishes. USAT sanctioned and a Massachusetts State Championship qualifier.
Join Against the Tide, a family friendly swim, run and walk that raises funds for the Massachusetts Breast Cancer Coalition. Attend in Hopkinton on June 20 or Brewster on June 27, or join virtually June 20 to June 27.
Join the 34th Annual Hopkinton Against the Tide on June 20, 2026 at Hopkinton State Park for swims, runs and a family walk raising funds for the Massachusetts Breast Cancer Coalition. Celebrate fitness, community and prevention.
Take on a five day non stop expedition race June 22 to 27, 2026 based in North Adams, MA. Teams of two to four will navigate wild Vermont mountains, forests, waterways and single track in a continuous test of navigation and endurance.
Join the 27th Annual Cape Cod Against the Tide at Cliff Pond for a family friendly day of swims, runs, and a fitness walk raising funds for the Massachusetts Breast Cancer Coalition. Race or cheer on the community on beautiful Cape Cod.
Take on the Cohasset Triathlon on June 28, 2026 at Sandy Beach in Cohasset, MA. This sprint distance event offers individual, aquabike, and relay team options for ages 14 and up, promising a fast, scenic seaside challenge for all abilities.
July 2026
Dive into summer at the Nantucket Triathlon on July 18, 2026 at Jetties Beach, with individual triathlon, AquaBike and relay options for racers 14 and up. Enjoy a scenic seaside course and island race day vibes.
August 2026
Take on the Greenfield Triathlon in Greenfield MA, a USAT sanctioned swim bike run on the scenic Green River welcoming solo racers and two or three person teams. All proceeds benefit the Greenfield Recreation Department and race day features chip tim..
Join the Sharon Triathlon on August 9 2026 at Lake Massapoag in Sharon Massachusetts, featuring a 0.5 mile swim, 12.3 mile bike and 4.4 mile run. Enjoy a fast bike loop, shaded lakeside run and a post race barbecue.
September 2026
Join the Dover Sherborn Boosters Triathlon September 13, 2026 to support local school athletics. Enjoy a sprint with a Farm Pond swim, rolling 14.3 mile bike and 3.4 mile run finishing at Dover Sherborn High School with a post race brunch.
Join the 9 Women's Triathlon in Hopkinton on September 13, 2026, offering Individual, Relay and AquaBike entries and limited to 650 athletes. Enjoy a supportive race day atmosphere perfect for seasoned racers and newcomers alike.
Race the Buzzard's Bay Sprint at Horseneck Beach in Westport, MA on Sept 20, 2026. Triathlon, duathlon, relay and aqua bike routes showcase coastal roads and a beach finish.