Connecticut Running Races

211 upcoming races across Connecticut in the next 12 months, from local 5Ks to marathons and ultras. Updated nightly. Want filters, maps, and radius search? Open Connecticut in the Race Finder.

By distance: Half Marathons · 5K Races · 10K Races · Ultras

By city: Hamden · Stratford · Roxbury · West Hartford

Racing in Connecticut: what the calendar looks like

There are 211 races on the Connecticut calendar over the next 12 months, which works out to roughly 4 per week. Among complete calendar months, November 2026 has the most listed races (81); September 2027 has the fewest (2). The busiest places to race are Hamden (12), Stratford (9), Roxbury (8).

Of those, 136 offer a 5K, 35 offer a 1 Mile and 15 offer a 10K. The next marathon is Roxbury Fall Classic on November 14 in Roxbury. The next half marathon is Reservoir Run Half Marathon, 5K, Kids Fun Runs & Family Stroll on October 25.

By race count Connecticut ranks 27th of 51 states and DC.

Races by month

Marathons in Connecticut

Connecticut has 2 marathons coming up in the next 12 months. First up is Roxbury Fall Classic on November 14, 2026 in Roxbury; after that come Tarrywile Half Marathon (Sun 11/15, 2026).

October 2026

November 2026

December 2026

January 2027

February 2027

March 2027

April 2027

May 2027

June 2027

July 2027

August 2027

September 2027

October 2027

Planning a race

Get Connecticut races in your inbox

A short monthly email: what's coming up in Connecticut, registration deadlines worth knowing about, and lotteries about to open. No spam, unsubscribe anytime.

Browse other states: AK · AL · AR · AZ · CA · CO · DC · DE · FL · GA · HI · IA · ID · IL · IN · KS · KY · LA · MA · MD · ME · MI · MN · MO · MS · MT · NC · ND · NE · NH · NJ · NM · NV · NY · OH · OK · OR · PA · RI · SC · SD · TN · TX · UT · VA · VT · WA · WI · WV · WY