B.A.A. 10K Registration Participants Results Volunteer Watch Brigham and Women's Hospital Sponsors Sections volunteer at the b.a.a. 10k volunteer at the b.a.a. 10k B.A.A. VOLUNTEERS TAKE PRIDE IN THEIR ROLE WITHIN OUR RACES AND WE ARE GRATEFUL FOR THEIR COMMITMENT AND SUPPORT. Registration Join us on Boston Common! Registration for the 2021 B.A.A. 10K will open in May 2021. Descriptions Learn about our B.A.A. 10K volunteer opportunities. To see a full list of potential job descriptions, click here.