3 aid5K Races in Connecticut
As of October 6, 2026, Crewable lists 57 upcoming 5K races in Connecticut from October 2026 to April 2027. The next is RACE FOR CATHERINE on October 9 in Newtown. Registration is open for 50. 2 advertise prize money.
Sources: UltraSignup, RunSignUp, UTMB, race organizers and race websites
With aid station data
3 aid
1 aid
1 aid
1 aidin 5 days
Mohawk Mountain Race
Cornwall, CT6,338 ft gain
MarathonHalf Marathon+2
Open until Oct 10from $40
Race calendar
October 2026
46 racesEversource Hartford Marathon, Half Marathon, Relay & Charity 5K
Hartford, CTMarathonHalf Marathon+1Prize moneyCloses Oct 9Coast Guard Foundation - Run to Remember 5k Road Race & Walk
New London, CT5KOpen until Oct 17from $40The Ridgefield Road Fest 50th Anniversary: 1/2 Marathon, 7-Miler, and The Iris Fund 5K
Ridgefield, CTHalf Marathon7 mi+1Open until Oct 18from $39.50Sickle Cell Disease Association of America, CT/ Michelle's House Walk. Run. Bike.
New Haven, CT15 mi5KOpen until Oct 24from $25Reservoir Run Half Marathon, 5K, Kids Fun Runs & Family Stroll
WESTON, CTHalf Marathon5KOpen until Oct 25from $15
November 2026
9 racesPlainfield Salute the Troops 5k, Fun Run, & Soldier Stroll
Central Village, CT5K1.3 miOpen until Nov 7from $10
December 2026
1 raceApril 2027
1 raceQuick answers
What is the next 5K race in Connecticut?
RACE FOR CATHERINE, on Friday, October 9, 2026, in Newtown. Distances: 5K.
How many 5K races in Connecticut have open registration?
50 of the 57 list registration as open as of October 6, 2026, including RACE FOR CATHERINE, 4th Annual Pumpkin Run Harwinton 5K & Kids Dash and Gemstone Sparkle Sprint 5k.
Which 5K races in Connecticut offer prize money?
2 races advertise prize money, including Bristol Mum-A-Thon Road Race 2026 ($600).
What is the busiest month for 5K races in Connecticut?
October 2026, with 46 of the 57. November 2026 follows with 9.
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