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 20 exciting races across the region. Find your next race in Massachusetts below and join the running community at these great events!
June 2026
A multi-sport fundraiser on June 20, 2026 at Hopkinton State Park featuring open-water 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 coastal sprint triathlon at Surf Drive Beach in Falmouth, Massachusetts featuring a salt water swim, an 8.5 mile bike that passes Nobska Lighthouse, and a flat 3.2 mile run. Multiple categories include aquabike, relays, para divisions, and a virtua..
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.
A three day indoor hybrid fitness race in Boston combining a 5 km run with ten functional fitness zones. Features Elite and Age Group heats, Ruck waves, 2 Person and 4 Person teams, plus a DEKA FIT Ultra option.
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
The 42nd Annual Greenfield Triathlon in Greenfield MA on August 2, 2026 offers Sprint and International distances with individual and two and three person team categories. 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 on August 23, 2026 at DCR Carson Beach features sprint and Olympic triathlon distances, aquabike and team relay options along a course of beaches, paths and closed roads in Boston.
September 2026
A USAT sanctioned triathlon at Craigville Beach offering sprint and Olympic distances plus relays, aquabike, duathlon, aquathlon and a virtual Tri It Your Way option. Massachusetts residents can earn state championship ranking points.
Experience a premier women's triathlon in Hopkinton featuring a swim, bike and run. This event offers individual and relay categories with a capped participant field for an focused racing atmosphere.
Experience a scenic sprint triathlon featuring a swim in Farm Pond and a bike ride through the Massachusetts backcountry. This community event concludes with a festive breakfast buffet and a stadium style finish.
A point-to-point adventure race in Nickerson State Park combining running, cycling, navigation and swim or paddleboard segments; racers compete solo or in teams of two to four on varied trail and water terrain.
A single day multi discipline adventure race in Greenfield MA featuring mountain biking, trail running, paddling, and map and compass navigation with BYOB paddling and a modified rogaine course format.
A multisport event at Horseneck Beach in Westport, MA on September 20, 2026 featuring triathlon, duathlon, relay and aqua bike formats with short swim and run segments. Early registration discounts are offered.
October 2026
A point-to-point swim-run through the Cape Cod National Seashore on October 3, 2026, offering three distances. Competitors may race solo or as two-person teams; the event is part of the My SwimRun Championship Series.
An off-road paddle run bike triathlon at Northfield Mountain featuring mass start paddles on the Connecticut River, trail running and single track mountain biking, with chip timing and staffed transitions.