2025 Marathons

Connecticut 2025 Marathons

Your complete Connecticut 2025 marathon calendar. Find every marathon happening in Connecticut in 2025 with comprehensive race details, registration information, and official results, including the Savin Rock Marathon (West Haven), Nutmeg State Marathon (Hartford), and NipMuck Trail Marathon (Ashford).

Each marathon listing includes a 2025 marathon guide including dates, locations, course details, weather conditions, and relevant links for registration and more information. We maintain the most current results database, publishing official results on race day, plus complete 2024 results for year-to-year comparison.

Nutmeg State Marathon

Hartford, Connecticut

May 14, 2025

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The Nutmeg State Marathon in Hartford presents a unique challenge with its 12 laps on a 2.13-mile loop, incorporating a mix of asphalt and a brief dirt path, all set within the scenic Goodwin Park & Golf Course. As part of the New England Challenge series, this marathon offers an intimate racing experience where runners navigate rolling hills and occasionally share the course with golf carts, providing both a mental and physical test amid quintessential New England charm.

Hartford Marathon

Hartford, Connecticut

October 11, 2025

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The Hartford Marathon takes runners on a scenic journey through Connecticut's capital, starting at the grand Connecticut State Capitol and finishing beneath the historic Soldiers and Sailors Memorial Arch in Bushnell Park, with a dynamic course featuring rolling hills and iconic landmarks like the homes of Mark Twain and Harriet Beecher Stowe. Celebrated for its enthusiastic community support and vibrant autumn atmosphere, this Boston-qualifying race offers an unforgettable New England experience with brisk weather and lively post-race festivities.