Massachusetts
Massachusetts Triathlon Calendar 2026-2027
Monthly updates for Massachusetts
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Explore the best triathlons in Massachusetts for 2026-2027! Our updated list features 16 exciting races across the region. Find your next race in Massachusetts below and join the running community at these great events!
May 2026
Kick off the season in Hopkinton with sprint and team duathlon and triathlon options routed through scenic Hopkinton State Park, Southborough and Ashland. Enjoy a custom finisher medal, BBQ, a soft shirt and live results for a fun race day.
Join the 12th Annual LandShark Swim at Lake Gardner in Amesbury on May 31 for swims from a half mile to 2.4 miles or a swim and run. Calm open water, safety support, a swim cap and post race treats make it a fun day.
June 2026
Wellfleet Sprint Tri at Long Pond features a 1/4 mile swim, 10 mile bike through Cape Cod National Seashore and a 3 mile ocean view run past the Beachcomber. Relay and virtual entries welcome for a scenic, traffic free race day.
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.
Take on the Harvest Triathlon in Wareham, Massachusetts on June 7, 2026, with sprint and Olympic distances plus relay and aquabike options. Enjoy a calm spring fed lake swim, a scenic one loop bike, and a closed trail run through cranberry bogs.
Race the Bare Hill Sprint Triathlon, Duathlon and Aquabike in Harvard MA on June 7, 2026, featuring short swim, scenic bike and run courses for all abilities. Start and finish by the Town Library at 4 Pond Road with relay and Aquabike options.
Join Hopkinton Against the Tide on June 20, 2026 at Hopkinton State Park for swims, runs and a fitness walk supporting the Massachusetts Breast Cancer Coalition. All abilities welcome and teams are encouraged.
Tackle the five day Endless Mountains Adventure Race, a nonstop team expedition staged in North Adams that winds through southern Vermont and wild terrain. Expect rugged trails, navigation challenges, limited sleep and pure expedition adventure.
Join the Cohasset Triathlon on June 28, 2026 at Sandy Beach, Cohasset MA for a scenic sprint triathlon with individual, aqua bike and team relay options. Swim, bike and run a fast, seaside course perfect for racers and first timers.
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.
A three day indoor functional fitness event in Boston combining ten workout zones with a 5 km run. The weekend features Elite and Age Group heats, Ruck waves, team categories and a separate DEKA FIT Ultra.
August 2026
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
Dive into the Dover Sherborn Boosters Triathlon on Sept 13, 2026, a community race with a pond swim, hilly bike and country run. All proceeds support local student athletes and the event welcomes individual and relay teams.
Race the Title 9 Women's Triathlon in Hopkinton, MA on September 13, 2026. Swim, bike, and run as an individual, relay, or aqua bike entrant in a welcoming, high energy event for athletes of all levels.
Join the Buzzard's Bay Sprint Triathlon and Du on Sunday September 20, 2026 at Horseneck Beach in Westport MA, with individual and team options and stunning bay and ocean views. Swim bike and run or choose an aqua bike or duathlon for a seaside finis..