Massachusetts
Massachusetts Triathlon Calendar 2026-2027
Monthly updates for Massachusetts
Get new running races (and updates) in your inbox every month.
Explore the best triathlons in Massachusetts for 2026-2027! Our updated list features 22 exciting races across the region. Find your next race in Massachusetts below and join the running community at these great events!
September 2026
A season-ending multisport event at Horseneck Beach in Westport on September 20, 2026, offering individual and relay triathlon and duathlon formats plus an aqua bike, with published age minimums, entry fees, and early discount offers.
October 2026
Experience a unique point to point challenge through the Cape Cod National Seashore. Choose from three distances for solo racers or teams of two in this premier New England swimrun endurance event.