B.A.A. Half Marathon Participants Results Volunteer Watch Sponsors Dana-Farber Sections volunteer at the b.a.a. half marathon volunteer at the b.a.a. half marathon B.A.A. VOLUNTEERS TAKE PRIDE IN THEIR ROLE WITHIN OUR RACES AND WE ARE GRATEFUL FOR THEIR COMMITMENT AND SUPPORT. Registration Volunteer registration for the 2020 B.A.A. Half Marathon will open in August. Descriptions Learn about our B.A.A. Half Marathon volunteer opportunities. To see a full list of potential job descriptions, click here.