B.A.A. Half Marathon Registration Open
Registration is open for the 2021 B.A.A. Half Marathon presented by Dana Farber Cancer Institute. The race will be held virtually from September 17-19, 2021—all finishers will receive a unicorn medal!
BOSTON MARATHON PRINCIPAL SPONSOR
OFFICIAL SPONSORS
Countdown to the 125th 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.