Connecticut Marathon Calendar 2025-2026

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Explore the best marathons in Connecticut for 2025-2026! Our updated list features 7 exciting races across the region. Find your next race in Connecticut below and join the running community at these great events!

June 2025
Jun
28-29
Sa - Su

Centurion Ultra Trail Event

Backyard Ultra 26 mi 50 mi 100 km 100 mi
Jun
28
Saturday

Brooksvale 12-Hour

Trail Run 26 mi 50 km 50 mi
October 2025
Oct
5
Sunday

Nipmuck Trail Marathon

Trail Run 26 mi
Oct
11
Saturday

Hartford Marathon

5 km 13 mi 26 mi
Oct
12
Sunday

Mohawk Mountain Race

Trail Run 5 km 10 km 13 mi 26 mi
November 2025
Nov
16
Sunday

Tarrywile Half Marathon

Trail Run 10 km 13 mi 26 mi
March 2026
Mar
28
Saturday

Savin Rock Marathon

13 mi 26 mi
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