Boston Qualifying Times 2025 Schedule. This list ranks marathons based on the number of runners who ran under the qualifying standards within the 2025 boston marathon qualifying window (between 9/1/2023 and 9/13/2024. The race will be held on monday, april 21, 2025.

The blue bars are the 2024 qualifying period and the purple bars are the 2025 qualifying period. So what does this mean for a possible cutoff time?