2025 Boston Marathon Cutoff Prediction. The updated prediction for the 2025 boston marathon cutoff time is between 5:43 and 7:11. In december 2023, i made an attempt to predict the cutoff time for the 2025 boston marathon.
The more recent data suggests that the 8:43 cutoff at the high end is no longer supportable by. The qualifying period for the 2025 boston marathon was september 1, 2023 to september 13, 2024.