Connecticut close

Connecticut Running Calendar 2025-2026

Header image
Monthly updates for Connecticut

Get new running races (and updates) in your inbox every month.

Explore the best running races in Connecticut for 2025-2026! Our updated list features 119 exciting races across the region. Find your next race in Connecticut below and join the running community at these great events!

Half Marathons Marathons Trail Runs Triathlons
December 2025
Dec
28
Su

The West Rock Winter Fat Ass Extravaganza

Backyard Ultra 2 mi
January 2026
Jan
1
Th

Brookfield Lions Run for Sight

4 mi
Jan
1
Th

Chilly Chili Run - Woodbridge

2 mi 5 km
Jan
1
Th

Frosty 5K - Guilford

2 mi 5 km
Jan
1
Th

Resolution Run 5K - Colchester

5 km
Jan
3
Sa

Kelley's Pace Frostbite

5 mi
Jan
4
Su

MADD Dry 5K

5 km
Jan
4
Su

Brian Aselton East Hartford 5K

5 km
Jan
11
Su

HTC Winter Series Barkhamsted 17 Mile

9 mi 17 mi
Jan
25
Su

Winter Wonderland 5 Miler

2 mi 5 mi
February 2026
Feb
1
Su

Copper Hill Road Run

7 mi 13 mi
Feb
7
Sa

Frozen Heart 900

Trail Run 50 mi
Feb
8
Su

IRIS Run for Refugees

5 km
Feb
8
Su

King of Pain

10 mi
Feb
22
Su

Lake Waramaug Polar Bear Run

8 mi
March 2026
Mar
1
Su

ShamRock & Roll 5K

5 km
Mar
7
Sa

Kelley's Pace Hare Hop

5 km
Mar
8
Su

Bolton Road Race

5 mi
Mar
21
Sa

Enchanted Forest Ultra Run

Backyard Ultra 50 km 6 hr
Mar
21
Sa

HTC Winter Series Simsbury 10K

5 mi