Boston Marathon 2025 Registration. The boston athletic association (baa) has announced the registration dates for the 2025 boston marathon. Although race day is still 10 months away, registration will open on september 9, 2024 at 10.
Et on friday, september 13. The qualification window for the 2025 boston marathon began on september 1, 2023, and will close at 5 p.m.
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