Boston Marathon 2025 Qualifying Window Dates. Athletes who have currently active finisher streaks of 10 or. The qualification window for the 2025 boston marathon began on september 1, 2023, and will close at 5 p.m.
The qualifying window is september 1 to the end of the application window, spanning just over a year. The qualifying window for the 129th boston marathon, scheduled to take place on april 21, 2025, began on september 1, 2023.
