Running Race Calendar in Connecticut, United States

IronHike Mohawk Mountain Spring 2026

Cornwall, Connecticut, United States

04 Jun, 2026 (Thu) – 07 Jun, 2026

Trail running, Running

Ultra 46.7K 24.1K 46.3K +13

UConn Health Half Marathon

Simsbury, Connecticut, United States

06 Jun, 2026 (Sat)

Running

Half-Marathon 10K 5K

Hamden Fest Half Marathon & 5k

Hamden, Connecticut, United States

06 Jun, 2026 (Sat)

$40.00 - $120.00

Running

Half-Marathon 5K

Roxbury Road Race Series #14

Roxbury, Connecticut, United States

06 Jun, 2026 (Sat)

$10.00

Running

15.9K

SongStrong 5K

Guilford, Connecticut, United States

06 Jun, 2026 (Sat)

$30.00 - $35.00

Running

5K

America’s 250th – Greenwich Community 5K & Fun Mile (1 Mile)

Greenwich, Connecticut, United States

06 Jun, 2026 (Sat)

$10.00 - $40.00

Running

5K 1.6K

Iron Hike - Spring Kuwohi Trail Half Marathon Plus Relay - 15 Miles | 7,140' Elevation | 12-Hour | Run, Hike or Walk

Cornwall, Connecticut, United States

06 Jun, 2026 (Sat) – 07 Jun, 2026

Free

Running

24.1K

Iron Hike - Spring Kuwohi Trail Half Marathon Plus - 15 Miles | 7,140' Elevation | 12-Hour | Run, Hike or Walk

Cornwall, Connecticut, United States

06 Jun, 2026 (Sat) – 07 Jun, 2026

Free

Running

24.1K

Heart of Eastford 5K

Eastford, Connecticut, United States

06 Jun, 2026 (Sat)

$50.00

Running

5K

Run the Race 5K

Danbury, Connecticut, United States

06 Jun, 2026 (Sat)

$35.00

Running

5K

Athletic Brewing Company Fairfield Road Races

Fairfield, Connecticut, United States

06 Jun, 2026 (Sat) – 07 Jun, 2026

$12.00 - $105.00

Running

5K 26.1K 1.6K 0.8K +1

Kelley's Pace National Donut Day Relay

Mystic, Connecticut, United States

06 Jun, 2026 (Sat)

Free

Running

Relay