27th Annual Cape Cod Against the Tide 2026

Cape Cod Against the Tide is a family-friendly multi-sport fundraiser held at Cliff Pond in Nickerson State Park, Brewster, Massachusetts. The event begins with swim races, followed by certified 5K and 10K runs, and includes a 3-mile fitness walk for those preferring a non-competitive option. Swimmers can select a USMS-sanctioned 1-mile swim, competitive or recreational 1-mile swims, or a half-mile recreational swim; wetsuits are permitted. The event supports the Massachusetts Breast Cancer Coalition, which works to prevent breast cancer associated with environmental factors. Funds raised will go toward MBCC programs, including Let’s Talk Prevention: Reducing Toxic Exposures, its webinar series, and a student environmental health program named Let’s Talk Prevention: Actions You Can Take. Participants may register individually or as part of a team. Bibs are distributed on the morning of the event, and beach regulations prohibit pets on the sand, with the exception of service animals.