The 27th Annual Cape Cod Against the Tide returns to Brewster, Massachusetts on June 27th, a day that brings together athletes and community members for a cause greater than themselves. This year’s event is set along the picturesque shores of Cape Cod Bay, where participants will engage in a variety of races including swimming and running disciplines across various distances. The essence of this annual gathering lies not just in competition but in its commitment to raising funds and awareness for breast cancer prevention.
Brewster's coastal setting offers an intimate backdrop for the event, with the ocean breezes carrying the salty tang that defines Cape Cod summers. Participants will find themselves surrounded by the vibrant hues of early summer flora as they traverse through streets lined with historic New England homes and bustling local businesses. The atmosphere is one of camaraderie and mutual support, where every stride on the road or stroke in the water contributes to a broader mission.
Since its inception 27 years ago, Against the Tide has grown into an essential part of Brewster’s community calendar, drawing hundreds of participants each year who come together for this unique event. Funds raised through registration fees and donations are directed towards supporting the Massachusetts Breast Cancer Coalition (MBCC) in their efforts to educate about environmental factors contributing to breast cancer. The proceeds help expand programs like “Let's Talk Prevention: Reducing Toxic Exposures” and "Actions You Can Take," which aim to empower individuals with knowledge on how they can reduce exposure to harmful chemicals linked to the disease.
The race courses are meticulously designed around Brewster’s scenic landscapes, featuring a USATF-certified 5K run through quiet residential areas and along picturesque coastal paths. The 10K route offers runners an even longer challenge over varied terrain, testing endurance while providing stunning views of Cape Cod Bay. For those who prefer the water, the event includes both competitive and recreational swimming options across different distances, all sanctioned by USMS for safety and fairness.
The morning begins with a serene start in the cool coastal air as swimmers make their way into the waters off Brewster’s shores. The 5K run takes runners through familiar streets and trails known well to locals and visitors alike, offering glimpses of Cape Cod's iconic charm. Aid stations are strategically placed along each course, ensuring that participants have access to hydration and encouragement throughout.
Participants should expect mild coastal conditions on race day, with temperatures hovering around an average of 18.7°C (65°F) during the event window in late June. The weather tends to be humid at about 80%, so lightweight moisture-wicking clothing is advisable for both runners and swimmers alike. Given that wetsuits are permitted but not mandatory, it’s a good idea to have one on hand if you’re sensitive to cooler water temperatures.
3-mile fitness walk
3mi • Start: 07:00:00 • Fee: $40.00
Competitive 1-mile swim
1mi • Start: 07:00:00 • Fee: $40.00
Recreational 1-mile swim
1mi • Start: 07:00:00 • Fee: $40.00
Recreational ½ mile swim
Start: 07:00:00 • Fee: $40.00
USATF-Certified 10K Run
10km • Start: 07:00:00 • Fee: $40.00
USATF-Certified 5K Run
5km • Start: 07:00:00 • Fee: $40.00
USMS-Sanctioned 1-mile Swim
1mi • Start: 07:00:00 • Fee: $40.00
Registration for the event can be completed online via Race Roster at https://raceroster.com/events/2026/111185/27th-annual-cape-cod-against-the-tide. Fees are set at $40 per participant regardless of the discipline chosen, and online registration closes promptly at 5:00 PM on June 26th. For those who prefer to register in person, a walk-in option is available starting from 7:00 AM at the event’s main tent where bibs will also be distributed.
On race day morning, participants should arrive early enough to collect their numbered tags and familiarize themselves with the courses ahead of time. All minors participating must have parental or guardian consent, signed prior to the start of activities. No dogs are permitted on beach areas except for service animals. With a focus on community engagement and environmental awareness, Against the Tide in Brewster is not just another run; it’s an opportunity to make meaningful strides toward healthier futures.
The 27th Annual Cape Cod Against the Tide in Brewster promises yet another memorable day of racing against the tide, with runners and swimmers alike contributing to a vital cause as they traverse the scenic roads and waters off the coast of Massachusetts.
