Maine
Maine Triathlon Calendar 2026-2027
Monthly updates for Maine
Get new running races (and updates) in your inbox every month.
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!
May 2026
Test your legs and swim strokes at the Polar Bear Triathlon and Duathlon in Brunswick on May 2, 2026 at Bowdoin College. Choose tri, du, aquabike, relay or virtual options featuring a pool swim plus scenic coastal bike and run courses.
June 2026
Sprint triathlon in Weld, Maine with a Lake Webb swim, a bike route around the lake and a run with views of Tumbledown Mountain. Events include adult individual, team sprint and a kids triathlon and participants receive a post race meal.
Dive into the scenic Sebago Lake Triathlon at St. Joseph's College in Standish, Maine on June 28, 2026, with sprint, Olympic, relay, duathlon and virtual options for all levels. Fast courses, pro timing and lakeside views make it a must do summer rac..
July 2026
IRONMAN 70.3 Maine in Augusta on July 26, 2026 features a Kennebec River swim, 56 mile bike and 13.1 mile run with the Maine State Capitol as a dramatic finish. This World Championship qualifier blends New England scenery with race day excitement.
August 2026
Join ÖTILLÖ Casco Bay Swimrun for ocean swims and scenic island runs with rock scrambles and historic stops around Portland, Maine. Athletes and volunteers travel by ferry to the start; spectators arrange their own transport.
Experience OTILLO Swimrun Casco Bay Islands on August 9, 2026 in Long Island, Maine. Run and swim through scenic Casco Bay with solo and team options across sprint to World Series distances. Perfect for racers and adventure seekers.
Great Loon Triathlon in Lincoln Maine offers races from sprint to Half Ironman on scenic Lake Mattanawcook. Event postponed to a TBD date. Registrations are preserved and a free Lifestyle Sports Global entry is offered for 2025 or 2026.