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Find out who is leading the fundraising charge for Australians impacted by rare cancer.

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Top Fundraisers

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The Kosi Challenge is Rare Cancers Australia’s (RCA) major fundraising event. 2025 marks the 13th year of the Rare Cancers Australia, Kosi Challenge.

Your donation will change lives. It will help patients of today. All donations over $2.00 are tax-deductible.

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If you have any questions about the Kosi Challenge or RCA, please contact us.

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