Boston Marathon 2025 Qualifying Window. If you're aiming to qualify for both the 2025 and 2026 boston marathons, there's a unique window of opportunity between september 1 and september 13, 2024 where one race. Et on friday, september 13.

Boston—the boston athletic association (b.a.a.) today began notifying qualified applicants of their acceptance into the 129th boston marathon presented by bank of america. The qualifying window for the 2025 race started on september 1, 2023, and will remain open until 5:00 p.m.