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I am climbing for rare.

The Kosi Challenge is the single signature fundraiserfor Rare Cancers Australia (RCA), with the sole purpose of raising awareness and much needed funds for people across Australia impacted by rare and less common cancers.

In March 2026, I'll be climbing with hundreds of others, in support of rare, in memory of and with those living with rare themself – together we are a community and Kosi unites us all!

All funds raised through the Kosi Challenge goes directly towards funding the individualised, 360 degree person centred support that RCA’s team of specialist cancer navigators provide for patients, carers and their families.

Thank you so much for your support – now can I get a ‘Kosi, Kosi, Kosi – Oi,Oi,Oi!’

P.S RCA is a Federal Government-classified Health Promotion Charity. All donations are fully tax deductible.

Thank you to our Sponsors

$500

Matched Donation From The Vertex Foundation

$400

Matched Donation From The Vertex Foundation

$400

Matched Donation From The Vertex Foundation

$400

Matched Donation From The Vertex Foundation

$400

Matched Donation From The Vertex Foundation

$400

Matched Donation From The Vertex Foundation

$400

Matched Donation From The Vertex Foundation

$400

Matched Donation From The Vertex Foundation

$264

Petra Jumpers

Elisha and Team, what a great cause. Looking forward hearing more about it and seeing pictures.

$250

Pamela Low

$250

Kasia Siwek

$211

Elisha Whitfield

$200

Mark Virgin

$200

Mark Gibson

$200

Phil Mcnamara

$200

Kristen Edwards

$200

Rachael Bylykbashi

$200

Kylie O'hare

$200

Annette Kerr

$111

Linda Foran

$106

Blerina Kola

Great cause, Kasia! Look forward to hear all about it and see the pics!

$106

Alison Freeburn

$106

Paul Foran

Go Miffy

$100

Adam Bolitho

You better finish!!

$60

Kirsty Langton

Good luck Rachael and team! Fantastic cause.

$54

David Cowell

Good luck Mark

$54

Richard

Happy hiking Kasia! What a great challenge

$54

Jana Moody

Good luck Kasia. Enjoy it!

$50

Camila Conti

Good luck on the challenge! Wishing you steady legs, great weather, and a fun experience you will be proud of!

$38

Kristina Sandström

Go Kasia!

$37

Martin

Congrats.

$20

Juan Pablo