Connecticut
Connecticut Triathlon Calendar 2026-2027
Monthly updates for Connecticut
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Explore the best triathlons in Connecticut for 2026-2027! Our updated list features 16 exciting races across the region. Find your next race in Connecticut below and join the running community at these great events!
May 2026
Experience a personalized triathlon at Pinewood Lake featuring a 1 mile swim, 25 mile bike ride, and a 5 mile hilly run through Trumbull. All proceeds support local community youth programs in Bridgeport.
A sprint triathlon and a concurrent sprint duathlon in Ridgefield Connecticut on May 31, 2026 featuring a half mile swim or 2 mile run, a 13 mile bike ride, and a 5K run, with individual and relay entry options.
June 2026
A sprint distance triathlon and duathlon at Seaside Park in Bridgeport on June 14, 2026. The course features a swim loop in the Sound, two flat 5 mile bike laps, and a 3.1 mile run loop.
Lake Terramuggus Sprint Triathlon in Marlborough CT features lake swims, rolling bike loops and a 5K lakeside run. Multiple distances are offered including a Super Sprint, relay division and an aqua bike option.
A USAT sanctioned multi-format race day at Quassy Amusement Park featuring Olympic and Sprint triathlons, duathlon, aquabike, and relays, with lake swims, looped bike courses, and a First Timers division with medals.
July 2026
A multi-distance triathlon at Blish Park in Marlborough CT on July 2, 2026 offering sprint, super sprint, relay and aqua bike options. Courses include lake swims, rolling bike loops and a lakeside run with aid at the town hall section.
An Olympic-distance triathlon at West Hill Lake in New Hartford, CT, featuring a 1500 m swim, 40 km bike and 10 km run; AquaBike and relay options are offered, paratriathletes are welcome and there are no cut-off times.
A sprint triathlon at Hopkins Vineyard in New Preston, Connecticut on July 11, 2026, featuring swim and bike segments around Lake Waramaug. Entry categories include individual USAT member and non member options and a relay team category.
Lake Terramuggus at Blish Park on July 16, 2026 offers Sprint, Super Sprint, relay, and aqua bike options, with swims, looped bike courses, and a 5K run around the lake.
A midsummer triathlon at Blish Park with Sprint, Super Sprint, relay and Aqua Bike options. The event features lake swims, looped bike courses and a 5K run around the lake.
August 2026
Season finale triathlon for Race4Chase youth programs on 08/01/2026 in Southington, CT. Participation is limited to Race4Chase program members; registration is free from 04/20/2026 to 07/31/2026. Participants receive a USA Triathlon Youth membership.
Sprint triathlon at Sharon Town Beach with a half mile swim, 12.1 mile bike and 4.1 mile run. Individual and team entries are offered and there is no day of registration.
Olympic distance triathlon at Lake Terramuggus in Marlborough, CT on August 15, 2026 featuring individual, relay, and aquabike options, age-group awards, and specific bike course and safety rules.
September 2026
A USAT sanctioned sprint triathlon at Madison Town Beach featuring a half-mile swim, 13-mile bike and 3-mile run, plus aquabike, youth, relay and parathlete divisions. Field limited to 500 and USAT membership is required.