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The Kosi Challenge is an annual event hosted by Rare Cancers Australia (RCA) to raise awareness and much needed funds for Australians diagnosed with a rare, less common or complex cancer each year.

In March 2024, we will be climbing 2,228 metres above sea level to reach Australia’s highest point to help RCA.

One hundred per cent of funds raised through the Kosi Challenge goes towards the important work of RCA's Patient Support Team.

From helping patients to access specialists and treatments, through to delivering support groups, connecting people with services and providing financial assistance particularly in times of crisis, Patient Support is at the heart of what RCA does.

RCA is a Federal Government-classified Health Promotion Charity. All donations over AU $2 are fully tax deductible.

Thank you so much for your support.

Thank you to our Sponsors


Robert Brownrigg


Georgia Lawson


Meg And Bryan Bhd

Good Luck Ben!


Izabela K

Good luck Dom!👍


Rachel Stanton


Richard Brett

Good luck Ben!


Jason Davey

Go Keano!





You go Girl! 🔥❤️ I'm proud of you ❤️



Good work Benji!


Dan Chapman

All the best Ben!



Good on you Erin


Colleen Kasiou

Climb every mountain, forge every stream, follow every rainbow 🌈 ❤️


Jane Curry


Andy De Souza


Phoebe Lovett

Get dem legs moving :)


John Dicks

Good luck Erin


Kate Parson


Kate Parson


Molly Moore

Love you dom! Good luck!