Connecticut Triathlon Calendar 2025-2026

Header image

Explore the best triathlons in Connecticut for 2025-2026! Our updated list features 166 exciting races across the region. Find your next race in Connecticut below and join the running community at these great events!

July 2025
Jul
11
Friday

The 7-11 Slurpee Day Ultra 60k

Trail Run 60 km
Jul
11
Friday

Rails-to-Trails 5K - East Hampton

Trail Run 5 km
Jul
12
Saturday

Move With the Urban League

5 km
Jul
12
Saturday

Hopkins Vineyard Triathlon

Triathlon
Jul
13
Sunday

Sailfest 5K

5 km
Jul
24
Thursday

Riverfront Hartford 4 Mile

4 mi
Jul
24
Thursday

Cedar Lake Triathlon Series

Triathlon
Jul
26
Saturday

Valley of Hartford 5K

5 km
Jul
26
Saturday

Southwest Cafe Margarita 5K

5 km
Jul
27
Sunday

Soapstone Assault

Trail Run 5 mi
August 2025
Aug
2
Saturday

John & Jessie Kelley Half Marathon

13 mi
Aug
2
Saturday

The People's Forest 7-Mile Trail Run

Trail Run 7 mi
Aug
3
Sunday

Walnut Beach Ice Cream Run 5K Benefiting the Boys and Girls Club of Milford

5 km
Aug
7
Thursday

Cedar Lake Triathlon Series

Triathlon
Aug
10
Sunday

Niantic Bay Triathlon

Triathlon
Aug
13
Wednesday

Stonington Cross Country 5K

Trail Run 2 mi 5 km
Aug
16
Saturday

The Perogie Dash

5 km
Aug
17
Sunday

Mohegan Striders 4-Miler

4 mi
Aug
17
Sunday

Old Wethersfield 10K

5 km 10 km
Aug
19
Tuesday

Battle of Stonington 5K

5 km
Articles
The Beauty of the Easy Run — Why slowing down might be the smartest thing you do for your running
Mizuno Wave Rider 28: Elevating the Legacy of a Running Icon
Garmin Forerunner Review: Garmin Forerunner Series
Stride with Confidence: A Comprehensive Guide to Saucony Running Shoes