125th Boston Marathon


126th Boston Marathon

boston marathon

The Boston Marathon is the world's oldest annual marathon. The B.A.A. manages this American classic, which is sponsored by John Hancock.

B.A.A. 5K

The B.A.A. 5K was held virtually over Patriots' Day weekend, April 16-April 18!

B.A.A. 10K

The 2021 B.A.A. 10K, presented by Brigham and Women's Hospital, was held virtually June 25-27!

B.A.A. Half Marathon

The 2021 B.A.A. Half Marathon, presented by Dana-Farber Cancer Institute and the Jimmy Fund, will be held virtually September 17-19!

B.A.A. Distance Medley

The B.A.A. Distance Medley is a three-race series which combines the B.A.A. 5K, the B.A.A. 10K, and the B.A.A. Half Marathon.

B.A.A. Invitational Mile

Top scholastic boys and girls, as well as a field of professional male and female milers, compete in the annual B.A.A. Invitational Mile.

Mayor's Cup Cross Country

The Mayor’s Cup began in 1990 and the B.A.A., in partnership with adidas, has supported the event since 1997.

Patriots' Day Mile

The inaugural Patriots’ Day Mile was held April 16-18, 2021 and all entrants received a limited-edition hat from adidas!

The B.A.A. hosts training clinics for all levels. The free clinics are open to registered entrants of races and their guests.

Through B.A.A.'s commitment to the local running community, nearly 35,000 Boston-area youth have experienced B.A.A. programs.

Boston Athletic Association, established in 1887, is a non-profit organization with a mission of promoting a healthy lifestyle through sports, especially running.

From race registration to race results, keep up to date with the latest news and events from the Boston Marathon.