Maine
Maine Triathlon Calendar 2026-2027
Monthly updates for Maine
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Explore the best triathlons in Maine for 2026-2027! Our updated list features 7 exciting races across the region. Find your next race in Maine below and join the running community at these great events!
July 2026
An adventure-style triathlon combining a 1.2 mile swim, a 95 mile bike, and a final run up to Mount Washington summit, with athlete support allowed and strict prior-qualification requirements.
IRONMAN 70.3 Maine in Augusta features a fast downriver swim on the Kennebec River, a 56 mile bike course and a rolling 13.1 mile run. The event includes strong local spectator support and serves as a World Championship qualifier.
August 2026
A multi sport event in Lincoln, Maine offering Olympic and Sprint triathlons plus corresponding duathlon options around Prince Thomas Park and Lake Mattanawcook.
A swimrun across the Casco Bay Islands off Portland, Maine, with three distances from about 9.7 km to 35.2 km. Athletes travel by ferry to start islands and finish on Peaks Island with post race food and awards.
OTILLO Swimrun Casco Bay Islands is a swimrun event in Long Island, Maine on August 9, 2026, offering World Series, Sprint and Experience categories for solo and team entrants plus spectator boat tickets for adults and children.
A community triathlon at Pemaquid Beach Park offering a 400-yard swim, 17.4-mile bike, and 3.1-mile run, with individual and three-person relay options, chip timing, awards by age group, and proceeds supporting a playground fund.
September 2026
Experience a scenic multi-sport weekend in Maine featuring triathlons, a unique hill climb challenge, and various running distances. Enjoy a famous post-race pumpkin-themed brunch and community atmosphere at this 20th anniversary festival.