Boston Marathon 2025 Entry Process. Exact registration dates and entry procedures for the 2026 boston marathon will be announced following the 2025 boston marathon. What to know about the 2025 boston marathon find out the date, how to qualify, and more details about the 129th boston marathon.

129th boston marathon registration qualifier registration for the 129th boston marathon has closed. The boston marathon registration window for the 2025 boston marathon opens on september 1, 2023, and closes on september 13, 2024.