The Nantucket Athletic Association (formerly known as Nantucket Triathlon Club Inc.) is a nonprofit 501(c)(3) organization founded in 2012 to support races, training events, and community workouts for Nantucket athletes and the Island community.

In 2024, the organization changed its name to Nantucket Athletic Association to better reflect its broader commitment to Island sports and community events.

The Association hosts three weekly community runs on Tuesdays, Thursdays, and Sundays. The run schedule is posted here and on the Monument Running Group Facebook page. Open water swims also begin each May, with the swim schedule posted on the Nantucket Open Water Swimming Facebook page. Participants in these workouts are required to sign a waiver prior to participating.

The Association also sponsors and manages the Nantucket Half Marathon which takes place annually in October.

We are proud to support the Nantucket Athletic Association and its mission to promote health, fitness, and community engagement on Nantucket.