Boston Half

NOV
9
2025
Run the Boston Half on November 9, 2025, a scenic half marathon through the Emerald Necklace from Franklin Park past the Arnold Arboretum to Jamaica Pond. Support Dana Farber and the Jimmy Fund and take home a unicorn finisher medal.
Sun 9 Nov 2025

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Boston Half : November 9, 2025

The Boston Half is a half marathon presented by Dana-Farber Cancer Institute and the Jimmy Fund and will be held on Sunday, November 9, 2025. The event has a field size limit of 9,000 entrants. General registration opened on July 7, 2025 within the B.A.A. online platform Athletes' Village on a first-come, first-served basis and later reached capacity. The registration fee for 2025 was $100.00 USD. Entries are non-transferrable, non-deferrable, and non-refundable. Entrants must be 14 years old on race day. All athletes receive an adidas Boston Half participant shirt, race day amenities, and a unicorn finisher medal.

Course and recent figures

The race starts and finishes in Franklin Park and follows the Emerald Necklace Park System, passing the Arnold Arboretum, Jamaica Pond, Willow Pond, and Olmsted Park. In 2024 the event had more than 6,700 finishers. Team Dana-Farber fundraisers raised more than $800,000 at the 2024 race, with 670 Team Dana-Farber fundraisers and over $10 million raised collectively by Dana-Farber runners since the partnership began. Visit the organization's website for the most recent information.

Events nearby