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!

October 2025
Oct
5
Sunday

Nipmuck Trail Marathon

Trail Run 26 mi
Oct
11-12
Sa - Su

Forbidden Forest 30 Hour Ultra Run

Backyard Ultra 26 mi 50 km ... 100 mi 30 hr
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
Oct
18
Saturday

Tackle the Trail - Pomfret, CT

Trail Run 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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