Lace up your running shoes and embrace the festive spirit at the O'Putnam 5K, set to take place on Sunday, March 8, 2026, in the charming downtown of Putnam, Connecticut. This popular 5K race, a signature event of the Hartford Marathon Foundation's "O'races" series, invites runners to experience a vibrant Irish celebration. Typical race day conditions in early March see highs around 43F and lows around 22F, with a modest 14% chance of precipitation, creating a crisp and invigorating atmosphere perfect for running.

The O'Putnam 5K offers a scenic and engaging loop course, starting on Canal Street and concluding triumphantly on Main Street directly in front of the Courthouse Bar & Grille. Runners will navigate a rolling course along the picturesque Quinebaug River and the Putnam River Trail, enjoying charming views as they go. With an elevation gain of approximately 68 feet over 3.1 miles, it provides a manageable challenge for all levels, and walkers are welcomed with a generous course limit of 1 hour and 20 minutes. Hydration is available at pre/post-race areas and around mile 1.7, with medical personnel and portalets also provided for runner support.

What truly sets the O'Putnam 5K apart is its lively, community-focused atmosphere. Participants are highly encouraged to don their best Irish-themed costumes, adding to the festive fun. Every finisher receives a custom medal and an Irish-inspired hoo-rag, culminating in an unforgettable post-race party at the Courthouse Bar & Grille. Here, runners (21+) can enjoy an ice-cold craft beer along with a delicious hot corned beef sandwich on a pretzel bun, celebrating their achievement in true St. Paddy's style. Beyond the race, Putnam's downtown offers an array of antique shops and local eateries, making it an ideal destination for a full day of exploration.