Against the Tide Hopkinton
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Event overview
Against the Tide is a family-friendly, multi-sport, rain-or-shine event that benefits the Massachusetts Breast Cancer Coalition (MBCC). The 2026 schedule includes in-person events in Hopkinton (June 20) and Brewster on Cape Cod (June 27), plus a virtual component running June 20 to June 27. Funds raised support MBCC community education programs, the MBCC Webinar Series, and an expanded student environmental health program.
The event features swim, run, and walk components. Course and swim maps are available for both Hopkinton and Brewster. The road race distances include:
- 5K
- 10K
The 5K and 10K courses at both Brewster and Hopkinton are USATF certified.
Logistics and participation
Online registration closes the evening before each event, and walk-in registration is welcome on the morning of each event at the registration tent. There is no early bib pickup; bibs are distributed at registration on the morning of the event. Refunds are not allowed. Wetsuits are permitted for swim participants. No dogs or other pets are allowed on the beach, except for service animals. Minors under 18 must have parent or guardian authorization and a signed Release and Indemnity Agreement.
Participants may create or join a team during registration; new teams cannot be created after registration is complete. Virtual registrants may submit results for any or all virtual components. Volunteer roles include Event Greeters, Vendor Support, Swim Guide, Run Guide, Walk Guide, and Event Set-Up and Tear-Down, with volunteer support needed the day before and the day of the events. Visit the organization's website for the most recent information.