Boston Marathon 2024 Registration Window. As an example, the registration window for 2024’s boston marathon opened on monday, september 11 and closed on friday, september 15. All 30,000+ entrants (and those who didn’t end up.
Registration, which opened monday at 10 a.m., will take place. Qualifying runners can register this week to be one of 30,000 participants in the 127th boston marathon, taking place april 17.