Connecticut Running Calendar 2025-2026

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Explore the best running races in Connecticut for 2025-2026! Our updated list features 122 exciting races across the region. Find your next race in Connecticut below and join the running community at these great events!

June 2025
Jun
10
Tuesday

Winding Trails Sprint Triathlon

Triathlon
Jun
12
Thursday

Cedar Lake Triathlon Series

Triathlon
Jun
14
Saturday

Ansonia Six Hour Trail Run

Trail Run 6 hr
Jun
14
Saturday

Hamden Fest Half Marathon

5 km 13 mi
Jun
14
Saturday

Norbrook Farm Brewery Trail Festival

Trail Run 5 km 10 km 4 hr
Jun
14
Saturday

Gaylord Gauntlet

Obstacle Run 5 km
Jun
14
Saturday

Pat Griskus Olympic Triathlon

Triathlon
Jun
14
Saturday

Rooster Run

5 km 10 km
Jun
14
Saturday

GRR Race Series: First County Bank Father's Day 5k

5 km
Jun
14
Saturday

A. W. Stanley Park 5K

5 km
Jun
15
Sunday

L+M Summer Stride 10k

5 km 10 km
Jun
15
Sunday

Nipmuck South Trail Race

Trail Run 15 mi
Jun
15
Sunday

Branford Road Race

2 mi 5 mi
Jun
21
Saturday

Summer Solstice Trail Run

Trail Run 3 mi 5 mi 8 mi
Jun
26
Thursday

Riverfront Hartford 5K

5 km
Jun
26
Thursday

Cedar Lake Triathlon Series

Triathlon
Jun
28
Saturday

Centurion Ultra Trail Event

Backyard Ultra 100 mi 33 hr
Jun
28
Saturday

Rose Arts Road Races 10K

5 km 10 km
Jun
29
Sunday

Brooksvale 12-Hour

Trail Run 12 hr
July 2025
Jul
4
Friday

John Demille Firecracker 8K

8 km
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