We're fundraising for...
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
$1,000
Akesa
$309
Harcourts Coburg
I have faith in you!
$264
Bianca Pellegrini
Go Mum you can do it!!!
$264
Patrick Mehanna
Sounds like it will be fun. Hope there is a chilled bottle of champagne waiting at the end!
$250
Tony King
To quote Chris Handy - 'Go you good thing! Go!'
$250
Louise Graham
$250
Tony Thirlwell
Proud of you
$211
Anonymous
$211
Anonymous
$111
Anne Harris
$106
Neil Wildman
Good luck Marlon
$106
George Vlachos
Good luck Joe.
$106
P For Property
best of luck Joe
$106
Wendy Lu
$106
Evelyn Avina
You are truly admirable Elise, many years supporting oncology! All the very best and enjoy the experience!
$106
Lysa Dahlin
Go Claire!
$106
Cpt. Whizzle Sticks
$106
Jill Klinge & Colm Mac Gabhann
Fantastic effort for a good cause Louise- Colm and Jill
$106
Valda Struwig
$106
Valda Struwig
$106
Adrienne Parker
$106
Judy Hermann
Have fun, it’s for a great cause!!!
$106
Sharon Couper
Good luck Lauren! I have no doubt you’ll absolutely smash it!
$106
Melissa
Inspiring Louise! Enjoy every minute😊
$106
Jerko Bognar
Great cause all the best.
$106
Helen Brewster
Hope you hv better weather this year xx
$106
Jason Kururangi
-
$106
Lee Davelaar
I’ll pay triple if you run up.
$106
Christine Cooper Serr
Great team great efforts for wonderful cause ❤️
$106
Lou Cahill
$106
David Weinstein
There is no Mountain too high for Louise ! Amazing amazing
$106
Mary Youssef
Go Jacqs!
$106
Youssef Family
Good luck raising money for a great cause. Make sure you eat well and do your stretches before the walk.
$106
Caisley Graham
Always supporting a worthy cause.
$106
King Charles (big Brother Of Princess Anne)
Dear Malcolm, I am delighted to hear about your participation in the Kosi Challenge this year. Your commitment to climbing 2,228 metres above sea level to support Rare Cancers Australia (RCA) is truly commendable. The work that RCA's Patient Support Team does is invaluable, and your efforts will undoubtedly make a significant impact. In an effort to top my only sister, Princess Anne, I am pleased to personally donate to your cause as well. Your dedication to this cause is inspiring, and I am confident that you will achieve great success in this noble endeavor. Thank you for your unwavering support and for making a difference in the lives of those affected by rare cancers. With warmest regards, King Charles
$106
Karl Cornelius
Good luck Team Pfizer!
$106
Rhonda Buizen
Good luck Loz - what an amazing adventure
$106
Cheree Crisp
$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
$104
Louise Hukins
You go girl. Another long walk!!! Hope it’s a good one Lauren
$104
Dan Okeefe
A great cause to support, Andrew
$101
Patricia Cook
Good Luck and take care
$100
Rob Wilden
Great cause Claire!
$100
Yvonne Rawack
Well done Lauren. I love my daughter
$100
Brendon Adler
Hope it goes well, we are super proud of you and miss dad heaps
$100
Wendy Finianos
So proud of you Joe. A great initiative for a worthy cause. May God Bless You always 🙏
$100
Nidhi Bedre
Go Go Go Jacqui!!!!
$100
Long Lam
Love what you are doing Joe!
$100
Malcolm Lockie
$100
Helen Han
Such an important cause. You’ve got this!
$100
Christie Gladstone
Good luck my friend X great cause ❤️
$100
Tom Hanna
$82
Ouwet El Lebnaniye
Zouzou Ayoub batal men bladi
$80
Mukesh Gohil
Very worthy cause Joe. All the best.
$65
Sammi Williams
Love that you’re doing this. Such a wonderful cause!
$57
Phil
$57
Claire Edgerton
$54
Samantha Stevens
Wow taking long walks to the next level! Go girl!!
$54
Gc
$54
Terry Nicola
$54
Jen Upton
Good luck Claire! 💪💪💪
$54
Susie Diacopoulos
So inspired by you taking this challenge on!
$54
Evelyn Avina
Enjoy the experience Jacqui and all the best! This is a great cause!
$54
Jamie Benbow
$54
Maria
Good luck Lauren, great cause and I hope you have a great time.
$54
Dpdg
$54
Simon Walker
Good luck Claire & team! Such a great cause!
$54
Russ
Great cause ,well done George
$54
Russell Allchin
Great cause ,well done Claire
$54
Vesna Crisp
Good cause, go girl 💕
$54
Vita Von Neumann-cosel
Good luck!
$54
Sally Ryan
Good luck Camilla!
$54
Ashleigh Snowden
Good work Lea!
$54
Claire Wilson
Dear Giles, I'm pleased to see you'll be conquering the Kosi Challenge once again. If you decide to dress up with Malcolm for the trek, I'll double to donation after.
$54
Natasha James
Go Claire 💪
$54
M & L
All the best Joe!
$54
Mike Garvin
Go for it Andy!
$54
Shannon Klein
Go team. Your feet may hurt but that’s because you’re helping to kick cancers butt.
$54
Ash Kuchel
Go Lauren! Thanks for doing this for such a close and worthy cause…. I know Lou would appreciate it and so do I . Go well ♥️
$54
Anonymous
$54
Julie Blinn
Go Loz!
$54
Banjo
🐶🏔️🥾
$54
Creative Advocacy Solutions
Matched donation by Creative Advocacy Solutions
$54
Brijesh Patel
$54
V Shah
Best of luck Joe
$54
Emilia Morris
You owe me a calendar.
$54
Carine Khoury
$54
Jacqui Youssef
$54
James Baber
Great cause - go team!
$54
Chanel Walker
$54
Fatia Tabet
Well done and good luck team! Enjoy the challenge!
$54
Natalie Bulyk
Go G!
$54
Pam And Bob Bennett
Good on you Georgie 🥰
$54
Anonymous
$54
Colab
Go Lauren!
$54
Emilia Morris
Yay George!! 👏🏼 Wish I was with you but will be there in spirit! Enjoy the annual summit and hope you get decent conditions for it. Always a great cause! 😊💜
$54
Alex Hind
Best of Luck mate! You will smash it!
$54
Em Bonser
Go LG!!! A most important cause xxxx
$54
Ashok Dixit
$54
Andrew Thirlwell
$54
James
Go Cam go!
$54
Steve Quinn
Great cause and can’t be tougher than managing some of the people you have over the years! 😉 Go well!
$54
Wendy
Enjoy the view 😎
$54
Michael Cahill
$54
Francesca Doherty
Well done Anne! I hope you enjoy the experience!
$54
Fiona Tan
A great cause - all the best Claire and Pfizer team!!
$54
Fiona Tan
Go Malcolm!!
$54
Olivia Egan
Great cause, good luck!
$54
Denis Tebbutt
Great challenge that you will triumph
$54
Tanya Carr-waldron
Go Lauren!
$54
Margaret Green
Good on you, enjoy your walk. 🌺Mum
$54
Anonymous
Good luck Georgie! Love from Uncle Russell
$54
Craig Manser
Awesome effort Joe.
$54
Jan Farrell
$54
Meg
Great work Lou.
$54
Piyush Chandgothia
All the best team Pfizer!
$54
Creative Advocacy Solutions
Matched donation by Creative Advocacy Solutions
$54
Le Johnson Family
Go Jay - so cool you’re doing this for the 4th year!
$54
Claire Wilson
What a fantastic cause!! Have a great trek up the mountain for the Kosi Challenge!!
$54
Ambereen Qureshi
Best of Luck Elise!
$54
Shogan
$53
Krishan Thiru
Go well, Claire and team! Such a great cause
$53
Kristina Luburic
Such a wonderful cause!
$53
Louise Shuggi
Great cause, good luck Claire! X
$53
Glen Sheldon
Good luck Claire
$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!!
$53
Claire Wilson
I'll double the donation if I see the costumes in action :D
$53
Claire Wilson
Enjoy the trek up and potential run down :)
$50
Brenda Mitchell
Go team Pfizer - Lauren,George,Claire,Malcolm and the whole group. What a great fundraiser and a huge challenge. Go well!
$50
Jess
Good luck with your Cosy Challenge
$50
Jess
If you don't win, I'm requesting a refund
$50
Seun
Go Lea - most importantly, enjoy it!
$50
Steven Nguyen
$50
Steven N
Good luck Malcolm!
$50
Hamish
$50
Elaine Saad
An amazing cause! Well done team Pfizer and Lauren 🙌🏽
$50
Diane Nicolson
enjoy the climb Lauren, she be easy after Macchu Piccu!
$50
Nidhi Bedre
woohoo - go Louise!!
$50
Nidhi Bedre
Yayyy - go Camilla!!
$50
Shalen P
Best of luck!!
$50
Creative Advocacy Solutions
Matched donation by Creative Advocacy Solutions
$50
Andrew
Go Louise!
$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.
$50
Nick Goodwin
$44
The Dalys
Woohoo go Cheree! Such an amazing thing to do!
$44
Simone Conyer
So proud of you mum!
$44
Heng & Hurst
Matched donation by Heng & Hurst
$38
Claire Grasso
Go Cheree!!!
$38
Penny Farrell
$38
Elaine Krek
All the best Team Pfizer. Enjoy the challenge and the beautiful surroundings whilst doing so. Very proud of all my buddies.
$38
Claire Wilson
$38
Nicky Johnson
Good luck team
$38
Anonymous
$38
John Dimopoulos
Have great climb team Pfizer
$38
Vinita Prasad
You better be the first one up there, considering what you are missing out on!!
$38
Michaela Toohey
Hope everything ok. Enjoy Kozzie!
$38
Victoria Leather
$38
Boney
You're awesome! What a legend doing this again and raising more $$. 👏
$38
Anonymous
$38
Donna Deegenaars
$38
Sam Rogers
Could someone please beat Jay-Anna this year
$38
Vita Von Neumann Cosel
$38
Anonymous
$38
Anonymous
$38
Anonymous
$38
Anonymous
$38
Anna Karelas
$38
Evelyn Aviña
$38
Megan Edwards
Good luck all !
$38
Vicky Acuña
Go Claire! Great cause! 💙
$38
Shanny Dyer
$38
Dawn Harris
This is amazing Louise
$38
Margaret And Michael Sampson
This is a wonderful way to honour your Mum who was a very special friend of ours.
$38
Heng & Hurst
Matched donation by Heng & Hurst
$38
Suzanne Bubb
Great work Louise!
$38
Claire Wilson
$38
Nick
Best of Luck
$38
Adam Sims
$38
Ben M
Go Georg and team! If you want to get up there quicker imagine the spiders chasing you.
$38
Sharon
Woohooo!! Go Lea!
$37
Mark Richmond
Good luck! 💪
$37
Kate Pask
Good luck team! Enjoy the journey!
$37
Tom
$37
Tom
Break a leg!
$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!!!
$37
Mon M
What a great cause to support, good luck Claire!
$37
Mon M
Best of luck, Lauren, thank you for supporting this worthwhile cause.
$35
Peta
Good work Lauren
$35
Bosco
Good luck with your Kosi Challenge 2025!
$35
Jennifer Petkos
Good luck team!!!
$33
Wendy Song
Go Jacqui!
$33
Wendy S
Go Camilla!
$33
Wendy S
Go Louise!
$33
Gabi Lockyer
So good. Champion. All the best for the challenge from all of us
$33
Carly Mclaughlin
Good luck team! You’ll smash it!
$30
Anonymous
Go Champ!
$30
G L
Go Lea Go!
$28
Nadia
Keep on kicking goals Claire! 👏💛🙌🏻
$26
Yvette Tunks
$25
Perry Macdonald
$23
Georgina Cook
$23
Jo Hendy
Go you fabulous thing! Proud of you!
$23
Dave Clayton-stamm
$23
Rachel Lewis
Go team Pfizer, see you on the mountain!
$23
Creative Advocacy Solutions
Matched donation by Creative Advocacy Solutions
$23
Anonymous
$23
Jayanna Brewster
🥾🏔️
$23
Vinita Prasad
RAC for RCA
$23
Yuen Lai
$23
Ja
$23
Giles Stratton
$23
Anonymous
$23
Graham Reynolds
Good luck Joe
$23
Ross H
All the best Louise
$23
Ross H
Give it heaps Camilla
$23
Ross H
Whip it good Jacqui!
$22
Rachael
Awesome work Jay! Good luck :)
$21
Anonymous
KOSI Challenge - Rare Cancers Australia
$20
Aravind
$20
Nars
Have fun on the climb Kosi crew!
$20
Mark Edwards
$10
Anonymous
Admire your persistence
$10
Shita Pahlevi
jiayou
Our Team Members
Jay-Anna Brewster
$809
Georgina Cook
$775
Elise Kelly
$481
Lauren Adler
$1,928
Camilla Cahill
$503
Malcolm Lockie
$383
Anne Harris
$662
Claire Edgerton
$1,007
Andrew Thirlwell
$1,282
Lea Godfrey
$288
Louise Graham
$1,479
Jacqueline Youssef
$950
Joe Ayoub
$2,262
Cheree Crisp
$402
All the best Joe! Have a safe climb and more than happy to donate to a worthy cause.