Boston Marathon 2024 Registration. Although race day is still 10 months away, registration will open on september 9, 2024 at 10 a.m. Registration details for that race will be announced following the.

Et and close on friday, september 13, 2024, at 5:00 p.m. Registration for the 129th boston marathon will open on monday, september 9 at 10:00 a.m.