Cape Cod against the Tide

JUN
27
2026
Join this family friendly multi sport event in Brewster to support breast cancer prevention. Choose from USATF certified 5K and 10K runs, fitness walks, or open water swimming along the scenic Cape Cod shoreline.
Sat 27 Jun 2026
10 kilometers 5 kilometers

Always double-check with the organizer's website! This page may contain affiliate links.

27th Annual Cape Cod Against the Tide

The Cape Cod Against the Tide is a multi-sport, family-friendly event held in Brewster, Massachusetts. This gathering takes place rain or shine and supports the Massachusetts Breast Cancer Coalition. The event offers participants various ways to engage, including swimming, running, and walking.

The running components of the event follow USATF certified courses, ensuring accurate distance measurements for participants who choose the competitive routes. The available activities include:

  • 10K Run (USATF Certification MA23007BK)
  • 5K Run (USATF Certification MA23006BK)
  • Walk
  • Swim

Participants have the option to compete individually or as part of a team. For those who choose the swim component, wetsuits are allowed. Registration is available online until the evening before the event, and walk-in registration is also provided on the morning of the event at the registration tent.

The event is held in a beach setting where pets are not allowed, with the exception of service animals. Because the event serves as a fundraiser for breast cancer prevention programs, participants are encouraged to engage in community fundraising efforts. A virtual participation option is also available for those unable to attend the in-person event in Brewster. Visit the organization's website for the most recent information.

10 km
Brewster 10k
5 km
Brewster 5k
Walk
Brewster Swim