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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 2025, 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

$111

Anne Harris

$106

Anonymous

Wonderful to see you raising money for such a worthwhile cause.

$106

Anonymous

$106

Henri & Deb Kalisse

Amazing effort yet again. Go Laur. Xxx

$101

Patricia Cook

Good Luck and take care

$100

Malcolm Lockie

$57

Phil

$57

Claire Edgerton

$53

Mathew Godfrey

$53

Mds

Good luck for yet another Kosi Challenge. Such a great cause - send my regards to RCA!!!

$53

Giles Stratton

$53

Noah Conyer

Go mum!!

$50

Princess Anne

I extend my warmest wishes as you prepare for the Mt. Kosciuszko challenge. Your determination and spirit in taking on this remarkable endeavor are truly commendable. As you navigate the trails, may you find strength in each step and inspiration in the breathtaking beauty of the landscape around you. This challenge not only tests your physical limits but also showcases your commitment to personal growth and resilience. It is a pleasure to sponsor your journey, and I look forward to hearing about your achievements. Remember, every summit reached is a testament to your hard work and dedication.

$37

Bryan Conyer

$37

Jennifer Lalor

$37

Elise Kelly

$37

Alan Haszard

Good luck Lauren

$37

Annette Rumble

Best of luck for the climb Lauren, a worthwhile cause.

$37

Vinita Prasad

Good Luck!!!

$21

Anonymous

KOSI Challenge - Rare Cancers Australia

$10

Anonymous

Admire your persistence