Marathon Monday Boston 2025. The 2025 boston marathon takes place on april 21, with 30,000 participants. The official boston marathon course tour is open to runners and supporters for $40 per person.

The boston athletic association will celebrate the 129th running of the boston marathon presented by bank of america on monday, april 21, 2025. What to know about the 2025 boston marathon, including the date of the race, how to qualify, course details, and other city events.