Market Square Day 10K

Lace up for the Market Square Day 10K on Saturday, June 13, 2026, in picturesque Portsmouth, NH. This beloved 10K road race traditionally kicks off the lively Market Square Day festival, drawing nearly 1,000 runners to the historic streets of downtown Portsmouth. The USATF-certified course is renowned for its captivating scenery and vibrant atmosphere, guiding participants through the heart of the city past iconic landmarks like the North Church and offering glimpses of charming boutiques and waterfront vistas.

The race begins amidst the festive energy of Market Square in front of the North Church, with major downtown streets closed to vehicular traffic for the event. As you navigate the course, expect a mix of mostly flat stretches and some gentle hills, providing an engaging challenge for all abilities. Runners often praise the electrifying community support, with cheering crowds lining Congress Street and even neighborhood breakfast parties adding to the unique charm. The journey culminates with a triumphant finish on Marcy Street, adjacent to the historic Strawbery Banke Museum.

Typical race day conditions in mid-June in Portsmouth offer pleasant weather, with highs around 74°F and lows around 54°F, and only a 16% chance of precipitation, creating ideal running conditions. Beyond the race, participants can immerse themselves in the Market Square Day festival, enjoying live music, diverse vendor booths, and local food, making it more than just a race—it's a full community celebration.