The Big Bold Swim | Breast Cancer Trials

The Big Bold Swim is back!

After such a successful first Big Bold Swim, the month-long swimming challenge will be back in 2026.

Participants can choose to swim 2km, 15km or 30km (or a goal of their choice) across the month for the 56 people who are diagnosed with breast cancer every day in Australia.

Interested in joining us? Complete the form below and we’ll be sure to let you know the latest updates!

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Did you participate in the previous Big Bold Swim?(Required)

Your generous support ensures our research can continue to help women with breast cancer and those at risk. At Breast Cancer Trials we collect your personal information and any other information you may volunteer (such as your experiences or involvement with breast cancer), so that we can record and process your gifts and contact you about our research, fundraising activities and other issues we believe will be important to you.

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In 2025…

1,317

People united nationwide to help see a world where NO MORE lives are cut short.

25,066

Km’s swum to help support the cause.

$500,614

Was raised for breast cancer research! We are so grateful to everyone who helped make this possible.

WHAT YOUR SUPPORT HELPS FUND

Only breast cancer clinical trials research can turn laboratory breakthroughs into new treatments and cures for every person diagnosed or at risk of breast cancer.

ACCESS TO
CLINICAL TRIALS

People who take part in the clinical trials you help fund may access a new treatment before it is routinely available as standard treatment for patients with the same type of breast cancer.

GLOBAL RESEARCH
COLLABORATIONS

Breast Cancer Trials plays a major role in the global efforts to control breast cancer collaborating with other clinical trials groups in 15 countries to ensure what we learn is shared.

ACCESS TO
NEW TREATMENTS

Every significant advance in breast cancer treatments and prevention has been achieved through clinical trials research. The more clinical trials you help fund, the sooner new treatments can be made available.