Connecticut Triathlon Calendar 2025-2026

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Explore the best triathlons in Connecticut for 2025-2026! Our updated list features 187 exciting races across the region. Find your next race in Connecticut below and join the running community at these great events!

December 2025
Dec
7
Sunday

Cla Blue Back Mitten Run

5 km
Dec
7
Sunday

Christopher Martin's Christmas Run

5 km
Dec
13
Saturday

Frosty Forest 5K

Trail Run 5 km
Dec
13
Saturday

North Canaan Santa Chase 5K

5 km
Dec
13
Saturday

Niantic Jingle 5K

5 km
March 2026
Mar
28
Saturday

Savin Rock Marathon

13 mi 26 mi
Mar
29
Sunday

Sleeping Giant Trail Runs

Trail Run 25 km 50 km
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