27th Annual Cape Cod Against the Tide

27th Annual Cape Cod Against the Tide

June 27, 2026 | Brewster, MA

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UPDATE regarding the swim events scheduled as part of Massachusetts Breast Cancer Coalition’s 27th Annual Against the Tide at Nickerson State Park in Brewster this Saturday, June 27:

After careful consideration and continued communication with officials at Nickerson State Park, we have made the difficult decision to cancel all swim events due to the unsafe presence of cyanobacteria in Cliff Pond.

The Department of Conservation and Recreation (DCR) has advised that the public should avoid contact with the water while the cyanobacteria bloom remains present. As cyanobacteria concerns continue to affect waterways across Massachusetts, current conditions at Cliff Pond do not meet the standards necessary to safely conduct the swim events.

In our 34 years of hosting the Hopkinton event and 26 years of hosting the Cape event, we have never had to cancel the swim portion. While both locations have occasionally experienced algae blooms in the past, conditions have always improved in time for event day. Unfortunately, that has not occurred in Brewster this year.

We understand how disappointing this news is. However, health and safety must come first. Pet owners should also keep their animals away from the shoreline to prevent them from ingesting the water.

The remainder of the event will continue as scheduled! Warm-up exercises and the National Anthem will now begin at 8:00 AM. Enjoy music from Coxswain Media starting at 7:00 AM, plus coffee and bagels courtesy of Dunkin’. The registration tent will open at 7:00 AM as planned.

Registered swimmers are invited to participate in one of our other event options: the USATF-certified 5K Run, USATF-certified 10K Run, or the 3-Mile Fitness Walk.

Our volunteers will assist with transfers at the registration tent, or participants may transfer themselves through Race Roster before the event.

Participants choosing the 3-Mile Fitness Walk may walk at their own pace, and there is no requirement to complete the full 3-mile course. Even if you choose not to participate in another event, we hope you will still join us on the beach to enjoy the festivities, refreshments, and community spirit. Thank you for your understanding and continued commitment to MBCC’s mission. Your support means so much to us.

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 26th. 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.