The Boston Athletic Association is a non-profit dedicated to organized sports, with a focus on running, in the Greater Boston area. The B.A.A. hosts such events as the Boston Marathon, the B.A.A. 5K, the B.A.A. 10K, the B.A.A. Half Marathon, the B.A.A. Distance Medley, and the B.A.A. Invitational Mile.
The current mission of the B.A.A. is "to promote a healthy lifestyle through sports, especially running" for all people.