Boston Half Registration Now Closed
The 2025 Boston Half presented by Dana-Farber Cancer Institute and the Jimmy Fund is on November 9. Runners already registered can sign up for Dana-Farber's charity team to support cancer care and research.
BOSTON MARATHON PRESENTING SPONSOR
OFFICIAL SPONSORS
Countdown to the 130th Boston Marathon
Youth & Community Programming
Through the B.A.A.'s commitment, nearly 35,000 Boston-area youth have experienced the inspiration and excitement of B.A.A. Youth Programs.
LIVE AN ACTIVE LIFE.
The B.A.A. was established in 1887 as a non-profit organization that promotes a healthy lifestyle through sports, especially running.
Support our races
B.A.A. events would not be possible without the hard work of our dedicated Volunteer Corps. Our volunteers are held to the highest standards, and at each event their work exceeds the expectations of athletes, race, staff, spectators, and community members.