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!
July 2026
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.
DEKA FIT in Boston is a three day indoor functional fitness event at the Thomas Michael Menino Convention and Exhibition Center. The course pairs ten fitness zones with 5 km of running and features individual, ruck, team heats and an 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 July 26, 2026 biathlon in Adams, MA for two-person teams and solo Iron Persons combining a 4.15 mile run and a 22 mile bike course, with online registration, race shirts, raffle, and proceeds supporting Northern Berkshire EMS.
August 2026
A USA Triathlon sanctioned event in Greenfield, MA featuring river swims, multi-loop bike courses past a historic covered bridge, and sprint and international distances for individuals and teams. Proceeds support the local 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.
A run, bike, run duathlon in Hamilton, MA on August 15, 2026. Distances are 2.4 mile run, 9.7 mile bike, 2.4 mile run; helmets required, individual or team entry, $20 fee, 150 participant limit.
A city triathlon at DCR Carson Beach featuring sprint and Olympic distances, relay and U23 divisions, plus an Olympic aquabike option. The course runs along beaches, paths and closed city roads.
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 community sprint triathlon at Boxford Town Beach with a 0.25 mile swim, 10 mile bike, and 1.5 mile run, plus relay team options. Proceeds support two $2,500 memorial scholarships for Masconomet Regional High School seniors.
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 one day, multi discipline adventure race in Greenfield, MA on September 19, 2026 combining mountain biking, trekking and paddling over a 15 hour course. The event is USARA sanctioned and requires teams to supply boats or follow an alternate route.
A sprint triathlon and duathlon at Horseneck Beach State Reservation on September 20, 2026 featuring a 1/3 mile swim, a 13.3 mile bike through Westport farm country, and a 3.1 mile run finishing along the beach path.
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.