2025 Boston Marathon Registration. The 2025 boston marathon qualifying window began on september 1, 2023, and will close at 5:00 p.m. It's crucial for runners to note the.

The boston athletic association (baa) has announced the registration dates for the 2025 boston marathon. 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.