Marathon Races in Connecticut
Find upcoming marathon races in Connecticut — with dates, locations, and direct registration links.
27 upcoming marathon races found in Connecticut
Upcoming Marathon Races in Connecticut
Half Marathon10K
UConn Health Half Marathon
Jun 6, 2026
Simsbury, CT
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Half Marathon5K
Shipyard Old Port Half Marathon & 5k
Jun 6, 2026
Portland, CT
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Hamden Fest Half MarathonHamden Fest 5K
Hamden Fest Half Marathon & 5k
Jun 6, 2026
Hamden, CT
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Half Marathon5K
Athletic Brewing Company Fairfield Road Races
Jun 6, 2026
Fairfield, CT
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Half Marathon
Fairfield Road Races Half Marathon
Jun 7, 2026
Fairfield, CT
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10KHalf marathon
Marathon - Individual Age group/open
Jun 8, 2026
Simsbury, CT
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Half Marathon
New England Series Marathon & Half Marathon – Day 1
Jun 8, 2026
Simsbury, CT
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Marathon5K
Half Marathon - Individual Age group/open
Jun 8, 2026
Simsbury, CT
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5KHalf marathon
10K - Individual Age group/open
Jun 8, 2026
Simsbury, CT
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64th Annual Ocean Beach/John & Jessie Kelley Half Marathon
64th Annual Ocean Beach/John & Jessie Kelley Half Marathon
Aug 1, 2026
New London, CT
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Kids Run5K Run/Walk
1st Annual Newtown Community Running Event
Aug 30, 2026
Newtown, CT
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Kids Run5K Run/Walk
Newtown Community Running Event
Aug 30, 2026
Newtown, CT
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Half MarathonHalf Marathon Relay
Faxon Law New Haven Road Race
Sep 7, 2026
New Haven, CT
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Half marathon
2026 Gulf Beach Half Marathon
Sep 12, 2026
Milford, CT
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Half Marathon5K
Surftown Half Marathon, Relay & 5k
Sep 13, 2026
Hartford, CT
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Half Marathon
Hogsback Half Marathon
Sep 26, 2026
Colebrook, CT
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Half Marathon10K
Norfolk Land Trust Trail Race/Haystack Mountain Challenge Half Marathon, 10k & 5k
Oct 4, 2026
Norfolk, CT
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Half MarathonHalf Marathon Student
Garavel SoNo Half Marathon | 5K
Oct 4, 2026
Norwalk, CT
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Eversource Hartford MarathonEversource Hartford Half Marathon
Eversource Hartford Marathon, Half Marathon, Relay & Charity 5K
Oct 10, 2026
Hartford, CT
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Half Marathon10K
Mohawk Mountain Race Marathon, Half Marathon, 10k & 5k
Oct 11, 2026
Cornwall, CT
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Individual - MarathonRelay Team - Marathon
Tackle the Trail (TM)
Oct 17, 2026
Northeast, CT
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Ridgefield Road Fest Half-MarathonRidgefield Road Fest 7-miler
The Ridgefield Road Fest 50th ANNIVERSARY: 1/2 Marathon, 7-Miler, & Iris Fund 5K
Oct 18, 2026
Ridgefield, CT
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Half Marathon
Pamby Ridgefield Half Marathon & 7M
Oct 18, 2026
Ridgefield, CT
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The Reservoir Run Races Half MarathonThe Reservoir Run 5K
The Reservoir Run Half Marathon, 5K, Kids Fun Runs & Family Stroll
Oct 25, 2026
WESTON, CT
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Hillacious Half MarathonHillacious Half Relay
Hillacious Half Marathon
Nov 14, 2026
Litchfield, CT
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Half MarathonMarathon
Roxbury Fall Classic
Nov 14, 2026
Roxbury, CT
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Storybrook Half Marathon
Storybook Half Marathon
Nov 21, 2026
Stratford, CT
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