34th Annual Hopkinton Against the Tide

34th Annual Hopkinton Against the Tide

June 20, 2026 | Hopkinton, MA

Against the Tide is a family-friendly, multi-sport event to benefit Massachusetts Breast Cancer Coalition (MBCC). MBCC is the only non-profit in the state dedicated to the prevention of breast cancer from environmental causes. The funds raised through Against the Tide help to support and expand our community education program Let’s Talk Prevention: Reducing Toxic Exposures, MBCC Webinar Series, and the newly-expanded student environmental health program, Let’s Talk Prevention: Actions You Can Take. We are grateful to all of you who help prioritize breast cancer prevention. Above and beyond your commitment to participate in the Against the Tide event, we hope that you will also fundraise on behalf of MBCC and our important mission to change the legacy of breast cancer for future generations.

Refunds are not allowed for this event. The participation of minor children under the age of 18 in the Against the Tide events must be authorized by a parent or guardian, and the parent/guardian must sign the Release and Indemnity Agreement.

There is no early bib pickup — bibs can be picked up at registration the morning of the event. Wetsuits are permitted. No dogs or other pets, with exception of service animals, allowed on beach.

Participants can create or join a team during the registration process on Race Roster. Please note that new teams cannot be created after registration is complete.

Online registration closes at 5:00 PM the evening of June 19th. Walk-in registration is welcome the morning of the event at the registration tent starting at 7:00 AM.

Wetsuits are permitted.

For technical support with registering or setting up your fundraising page, please contact Race Roster at +1 855-969-5515 or https://raceroster.com/contact.