Boston Marathon 2027: Registration Dates

Registration for the Boston Marathon 2027 for qualified runners takes place within specific windows and follows clear rules set by the B.A.A. Below you will find all key information regarding registration, pre‑verification of qualifying times, and the procedures involved in the qualification process.

Qualified Runner Registration — Boston Marathon 2027

Registration for runners with a qualifying time will take place from
September 14–18, 2026 through the B.A.A. Athletes’ Village platform.
Applications may be submitted until 5:00 p.m. ET on Friday, September 18.
Registration is not first‑come, first‑served — every qualified runner has time to submit an application within the designated window.

Due to field size limitations, achieving a qualifying time does not guarantee acceptance into the race.
A qualifying time only provides the opportunity to submit an application, and the final participant list depends on the number of submissions and the strength of qualifying times in a given year.

Entry fees are non‑refundable, and race bibs cannot be transferred or deferred.
The only exception is the B.A.A.’s pregnancy and postpartum deferment policy. Refunds may be available only to runners who purchased optional registration insurance.

Pre‑Verification of Qualifying Times

Beginning July 1, 2026, the B.A.A. opens the pre‑verification period for qualifying times
for the 131st Boston Marathon. Runners may submit their qualifying time early so it can be confirmed and stored in the Athletes’ Village system. This speeds up the registration process in September because the time is already verified.

Pre‑verification does not register you for the Boston Marathon. It only confirms your qualifying time in advance.
To enter the race, runners must submit a full application during the Qualifier Registration Week.

Both pre‑verification and September registration include time index adjustments for qualifying times achieved
on courses with a net elevation drop greater than 1,500 feet (457.2 m).

Key Dates — Boston Marathon 2027

The most important dates related to pre‑verification and qualified runner registration:

Summary

The registration process for the Boston Marathon 2027 requires attention to deadlines and accurate preparation of qualifying data.
Pre‑verification speeds up September registration but does not replace the official application.
Due to limited field size, meeting the qualifying standard alone does not guarantee entry.

Runners planning to participate should monitor B.A.A. announcements, prepare their qualifying documentation,
and submit their application within the designated registration window.

Source: Boston Marathon