2025 Boston Marathon. My estimate is based off of one factor… the chicago marathon. At the 2024 boston marathon, a cutoff time of five minutes and 29 seconds, beyond the qualification time, per age group, was enforced, making it one of the most significant cutoffs since 2012.
Et.the window closes on friday, september 13, at 5:00 p.m. The 129th boston marathon, scheduled for april 21, 2025, has set a new bar.
