Against the Tide

Register Today! Click the event link below.

June Virtual Event (6/20 – 6/27)
July Virtual Event (7/11 – 7/18)
August Virtual Event (8/15 – 8/22)
September Virtual Event (9/19 – 9/26)
Summer Bundle – Participate in all 4 events

Each virtual event features an 8-day participation window. You can choose to participate in any of the following event components:

  • Competitive 1-mile Swim 
  • 5K Run
  • 10K Run 
  • Half Marathon (August event only)
  • Full Marathon (September event only)
  • Aquathon 5K – Competitive 1-mile swim followed by 5K run
  • Aquathon 10K – Competitive 1-mile swim followed by 10K run
  • 3-mile Walk 
  • 1/2 Mile Stand-up Paddleboard
  • Recreational 1/2 mile or 1-mile Swim 
  • Recreational 2 -mile Kayak

Registration fees: Individual Registration $40.  Family Registration $100 (up to 5 family members)

Participant Fun Pack: All virtual participants will receive a free Participant Fun Pack, including an event t-shirt, swim cap or bib, participant medal, and sponsor items. 

Event Results Page: Swim, Run, and Aquathon participants will have the opportunity to submit their finish times to our event timing partner Second Wind Timing to be included on the Event Results page. Upon receipt of your registration, MBCC will provide instructions on how to submit finishing time.

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 ExposuresMBCC 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.

Important information about the FirstGiving Registration Site:

Please note that the new FirstGiving registration platform now requires all registrants to have a Username. When registering, please create a new FirstGiving account, providing an email, username, and password.
If you have recently registered for another event on FirstGiving you may encounter either of the following error messages “Username is already in use. Please use a different username” or “Your username or password is incorrect. If you don’t remember your password, reset it now,” please create a new Username by typing in a new name in the Username field and then click the Register button. Please note that you do not need to enter a new email address or a new password. Your Username should be 8 characters including at least 1 letter and 1 number.

Questions about the events or registration? Please contact Cyndi Swan, Event Coordinator at 800-649-6222 or or Cheryl Osimo, Executive Director at 508-246-3047 or Please use the subject line “Against the Tide Event Support Needed”.

Important Links:

Previous Against the Tide Event Resources:

Thank you to our sponsors who help us make this happen.

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