Boston Half

Boston Half, organized by the Boston Athletic Association, is a 13.1-mile half-marathon held in Boston, Massachusetts. The 2025 edition is presented by Dana-Farber Cancer Institute and the Jimmy Fund. The field is limited to 9,000 entrants and the entry fee is $100.

All finishers receive an adidas Boston Half participant shirt, race-day amenities, and a unicorn finisher medal. The event supports cancer care and research through Dana-Farber, with charity bibs claimed for 2025. Entrants must be at least 14 years old; entries are non-transferable, non-deferrable, and non-refundable.

Registration is sold out, though virtual participation remains available for eligible runners. Visit the organization's website for the most recent information.