Boston Marathon 2025 Qualifying Window. The qualifying window for the 130th boston marathon presented by bank of america, to be held april 20, 2026, opened on september 1, 2024, and will run through the end of registration week in september 2025. So if you want to race boston in 2025, you’d need to run a qualifying time at an eligible race between september 1, 2023 and september 13, 2024.

The qualifying window for the 130th boston marathon, scheduled for april 20, 2026, will open on sept. So if you bq in october, it would be for 2026.