Against the Tide is a family-friendly, multi-sport event to benefit the 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.

All in-person registrants will receive either a t-shirt, bib, and/or a swim cap.

Registration for any event, in-person or virtual, will enter you in a drawing for a kayak donated by Goose Hummock. One winner from all registrants will be drawn at Against the Tide in Brewster, MA on August 12th at 10AM. Please note that the winner will need to pick up the kayak at Goose Hummock in Orleans, MA. MBCC staff and board members are not eligible for entry in the drawing.

Click below to register for an ATT event:

USATF Certification Codes:

  • Hopkinton 5K: MA15005BK
  • Hopkinton 10K: MA15006BK
  • Cape Cod 5K: MA15009BK
  • Cape Cod 10K: MA15010BK

USMS Sanction Numbers:

  • Hopkinton: 023-W003
  • Brewster: 023-W002

Important Links:

MBCC deeply appreciates the generous support provided by our Against the Tide sponsors; click HERE to see our full list of sponsors!

WCVB Channel 5 is a proud media partner for Massachusetts Breast Cancer Coalition’s 2023 Against the Tide

After Against the Tide, post your pictures to!