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 28 exciting races across the region. Find your next race in Massachusetts below and join the running community at these great events!
May 2026
A season-opening multisport event at Hopkinton State Park on 05/17/2026 offering sprint duathlon and sprint triathlon in individual and team formats, with on-site amenities including medals, BBQ, shirts, and live results.
A community swim and run held as part of Wayland’s Rev250 Celebration, with separate kids and teen/adult courses. Distances include a 100 yard swim with a 1/2 mile run and a 250 yard swim with a 2 mile run.
Open water swims and a combined Swim + Run at Lake Gardner in Amesbury, MA on May 31, 2026, with multiple swim distances and about 200 participants.
June 2026
A short-course triathlon at Long Pond in Wellfleet featuring a 1/4 mile swim, 10 mile bike and 5k run. The USAT sanctioned race raises funds for community radio WOMR and also offers a virtual participation option; in-person spots sold out.
The Harvest Triathlon in Wareham, Massachusetts on June 7, 2026 offers sprint and Olympic triathlon and aquabike options with lake swims, single-loop bike courses and a closed trail run through cranberry bogs. It is a qualifier for USA Triathlon Stat..
Multisport races in Harvard, MA on June 7, 2026 include sprint triathlon, relay, duathlon and aquabike; the sprint tri is a USA Triathlon State Championship ranking event with in-state eligibility requirements.
A long running Cape Cod triathlon at Craigville Beach on June 13, 2026 offering sprint and Olympic triathlons plus duathlon, aquabike and aquathlon options, USAT sanctioned with relay and adaptive categories.
A multi-sport event at Hopkinton State Park on June 20, 2026, featuring swims, USATF-certified 5K and 10K runs, and a 3-mile walk to benefit the Massachusetts Breast Cancer Coalition.
A five day non stop 500K expedition race based in North Adams, Massachusetts. Teams of two to four navigate southern Vermont terrain including mountains, forests, waterways, gravel and single track.
The Cohasset Triathlon takes place in Cohasset, MA on June 28, 2026, offering Individual Triathlon, Individual AquaBike, and Relay Team options; registration runs from December 1, 2025 to June 26, 2026 with listed entry fees.
July 2026
A USAT sanctioned sprint triathlon at Surf Drive Beach in Falmouth, MA with a warm saltwater swim, a bike route past Nobska Light and a flat 5k run through coastal neighborhoods. Multiple categories include aquabike, para and relay options.
Nantucket Triathlon takes place in Nantucket, Massachusetts on July 18, 2026. It offers Individual Triathlon, Individual AquaBike and a two or three person relay with defined registration dates and fees.
A multi-discipline event at Littleton Town Beach with sprint triathlon, duathlon, relay and aquabike options, USAT sanctioned and part of the Massachusetts state ranking series.
Test your endurance at the Boston DEKA FIT. The indoor event combines 10 fitness zones with a 5 km run. Categories include Elite, Age Group, Ruck, and team competitions.
Experience a scenic 14 mile triathlon in Mattapoisett organized by the local Lions Club. This event supports regional charities and offers individual, youth, and relay categories for athletes of all backgrounds.
A biathlon in Adams, MA on July 26, 2026 featuring two person teams and individual Iron competitors combining a 4.15 mile run and a 22 mile bike course, with race shirts, a raffle, and awards across team divisions.
August 2026
A USAT sanctioned triathlon in Greenfield MA on August 2, 2026 offering International and Sprint distances with a Green River swim, road bike loops, and run courses. Proceeds support the Greenfield Recreation Department.
Sharon Triathlon on 08/09/2026 in Sharon, MA offers individual, relay and AquaBike formats with a half mile swim, a roughly 12.4 mile bike time trial and a 4.4 mile lakeside run, followed by a post-race BBQ.
The Boston Triathlon is held August 23, 2026 at DCR Carson Beach in Boston, featuring Sprint and Olympic triathlon formats plus an Olympic aquabike. Entry options include individual, U23, and relay categories with varied fees.