We're fundraising in support of those Australians, affected by a rare or less common cancer
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
$732
Anonymous
$528
Linda & Lachlan
Amelia, So incredibly proud that you continue to hold Sophia close to your heart. She will be smiling down on you ever so proudly. May the Kosi Challenge continue to support the families that need all the support available to them, on their most unimaginable Journey.
$528
Ruby, Carlin & Owen Mccloskey
Great job Amelia. Awesome effort!! What a way to continue Sophia’s story and highlight the need for awareness and funding. We are sure Sophia will be right with you.
$528
Anonymous
Go girl!
$528
Sue, Ben, Angus And Jack Mcmurtrie
Thank you Jo for raising awareness of this brutal rare cancer and remembering our beautiful Tess. So loved and missed every day.
$317
Alex Hill
Terrific stuff!!
$300
Elaine Cowley
Have fun!
$300
Peter Cowley
Have fun
$264
Andras Szomor
Avanti Avanti
$264
Wai Fong
Good luck J&J team!! You’ve got this! 💪🗻Such a great cause to be climbing for.
$264
Mike Thomas
Go hard! Go safe! Amazing what you are attempting. I’m right with you all the way.
$264
Embassy Creative
Go Team J&J!
$264
Watts Jill
Hope this helps wee girl
$250
Vuki Engineering Pty Ltd
$250
Harry Patchett
Nice one Craig - great initiative!
$211
Kristyann Brock
Love you so much & proud of you 🥰
$211
Wizza, Andy, Ollie, Evie And Wiggy
Gook luck Geredov’s!
$211
Anonymous
$211
Anonymous
Go Suz; have fun
$211
Anonymous
$211
Eliana Bonaccorso
Enjoy the challenge. I hope the weather helps!🌄🧗♂️❤️💙
$211
Joanna Rhodes
You go girl 💪🏻
$200
David Kop
Good luck J&J team. Wish I could be there with you!
$200
Niketa Duhan
Goodluck!! You guys will smash it :)
$112
Livi
Yay UG!! Proud of you always ❤️
$110
Melanie
Way to go Craig - what a great cause. I can't wait to hear how much you enjoyed the experience.
$106
Erica Mcauley-clark
Go team J&J! Wishing you an amazing climb and hope you get to see the spectacular views.
$106
Anonymous
Go Brianna! 👍
$106
Angela Geredov
You’re gonna smash it!!
$106
Kate Hudson
$106
Craig Bell
$106
Jon Vonk
Go get ‘em Jo!
$106
Anonymous
Such a great cause! Go Teresa
$106
Craig Strike
$106
Brett Strike
Good luck YB. Champion effort brother 👍
$106
Monica Rogers
Good climb
$106
Rgv
$106
Tex
$106
Seanito Sirisomphone
¡Vamos cariño!
$106
W
$106
Brian Nealon
$106
Elizabeth Brock
$106
Andrew Donnelly
Go Team!
$106
Anonymous
Keep up the great work and the kind heart you have con. Love you.
$106
Mark Mccredie And Dayle
Go girl
$106
Sung
$106
Michael Eisbacher
Go team J&J for such an important cause
$106
Petrus Joona
$106
Katherine Moore
$106
Patrick O'connor
Well done, Balazs, good to see you are still committed to good causes
$106
Pety Thomas
A great fundraiser, good on you Claudia I hope it all goes well. 🥰🥰
$106
Anonymous
So proud of you dear for taking on this challenge for a meaningful cause. Keep up the good work dear 🥰
$106
Annie
Gooooo Suz! Good luck xo Annie
$106
Anonymous
Ands, you’re amazing! So so impressive…you’ve got this!
$106
Gillian Parker
Go Girl !!
$106
James Stening
Go Suz!!!!
$106
Andrea
Also a great cause close to home. Go Suz!!
$106
Maisie S
Go Mummy !
$106
Jacqueline Earl
Such a wonderful challenge for a very worthy cause. So proud of you. Good luck Claudia!
$106
Martyn Burke
$106
Deborah Thomas
You go girl!
$106
Glenda Westley
Good luck Chris. Al the best on your climb.
$106
Sacko
$106
Dinh Le Thuy Le
Good luck daughter
$106
Coco
$106
Anonymous
$106
Hung Quoc Tran
Good luck daughter
$106
Joy
You go Girl! Love you!
$106
Kristiane
Go Suz🧚
$106
Anonymous
$106
Christina
Good luck Suz! Such a great cause.
$106
Andrea Kruller
Good luck!
$106
Craig Wheatley
Good deed Claudie
$106
Rob And Laura
Great work Suz! Great cause xoxo
$106
Anonymous
$104
Dale Watkins
Great work mate, good luck!
$104
Hazel Wheatley
$104
Kate Kim
Such an amazing effort for a truly important cause. Wishing you all the best for the climb! Proud to be able to support you and the work being done for people affected by rare cancers.
$100
Hanny Mohamed
Good luck!
$100
Elise
Enjoy the walk with our girl. Take lots of photos ❤️
$100
Jo De Smet
$100
Nicola
Pop off Queen
$100
Nik H
Yeah boi 💪🏼🥵
$100
Balazs Szomor
$100
Clare Shackleton
Good Luck to you all on the day! 🌄 For a Great cause 💜
$100
Oliver Bonaccorso
$100
Caleb Chew
Go Amelia! Have fun :) I'll be waiting for the strava
$100
Marilyn Landers
Go Amazing J&J Team!
$100
Georgina Ferris
Go mum, proud of you!
$100
Yg
Best of luck very proud
$100
Elise De Smet
Well done Amelia, Sophia would be so proud of you. Xx
$100
Willem
$100
Nicola Barnett
$100
Tin
Amazing initiative. Enjoy the hike 👍
$100
Niketa Duhan
Goodluck Luce! You'll smash it :)
$80
Jared Kaltoum
Good luck on the path
$78
Hayley Amos
You will skip up the mountain! Have fun x
$68
Johan Hansma
$66
Simon Shiels
$55
Carolyn Gross
Great work Jo and Goodluck , every step for Tess ❤️
$54
Michelle D'heureux
Go Ang!!
$54
Tom Shapiro
Go Suz! Enjoy the climb.
$54
Anonymous
$54
Manula Somaratna
Lard
$54
Martyn Burke
$54
Martyn Burke
$54
Martyn Burke
$54
Lidya Gal
תרומתנו הצנועה למטרה חשובה ובהצלחה בטיפוס על ההר. אוהבים אותך.
$54
Anonymous
Hey Brianna This is my contribution for your good cause
$54
Anne Dekkers
Thank you for climbing for Rare, Nic - cheering you on!
$54
Anonymous
$54
John
Great cause mate! Looking forward to the photos!
$54
Kat Drlja
Well done Clauds! Proud of you
$54
Anastasiya Roskoshnova
$54
Lesley Scott
Kosi Kosi Kosi Suze. Go you good thing.
$54
Jessica Marron
Thank you for supporting such a great cause!!
$54
Anonymous
$54
Josie Weise
Go geddem!
$54
Nic Bell
Great cause. Best of luck 🤗 see you soon 💕
$54
Lara Pope
Super proud Amelia. Much love from the Popes xx
$54
Sigrid Rijgersberg-von Stockhausen
See you at the top!
$54
Anonymous
GO Meagan!!!!
$54
Josefina Daley
Best wishes on reaching and surpassing your target for this worthy cause Sarah. Well done. Have a blast!! 🤩👏👏👏
$54
Grace
$54
Anonymous
$54
Valkyriess Starlight
GO TERESA!!!
$54
Rinsky Lawrie
Go on you Jo! Go get it!
$54
Julia Simmonds
Go Geredovs!!
$54
Carole Hudson
Go Chris - beat last years PB xx
$54
Floriane Lee
Go Go Go Anna 💫🙌
$54
Suzie Frost
Go Craig, so proud of you..🤗 you got this..xx
$54
Bec
A great cause!
$54
Anonymous
$54
Nathalie Richmond
Yay BFF!! Oi, oi oi x
$54
Alicia Ham
Go Team J&J!!
$54
Paul Wilson
Well done Oli!
$54
Paul Wilson
$54
Paul Wilson
$54
Martin
$54
Martin
$54
Warwick Shaw
Great cause Oli. Thanks for supporting RCA and their work!
$54
Rach Thom
$54
Rosie
Well done Jo! All the best!
$54
Warwick Shaw
Great cause Lucy. Thanks for supporting RCA and their amazing work with patients
$54
Margaret Stevens
Good luck my lovely 🥰 Such a wonderful human being x Love Marg
$54
Paula Lay
Good luck!
$54
Yoland
Rare Cancers- the ONLY way we will make a difference to outcomes is combining forces to research the why, the how and most importantly the what can we do. Great work Suz and Team, enjoy the walk (and the training) x
$54
Jamie
$54
Warwick Shaw
Great cause, thanks for supporting!
$54
W
$54
Brandon Jones
$54
Anna Gal
$54
Anonymous
Good on you Jo. Hope the climb goes easy for you Great cause..
$54
Ange
love you, you’re the most amazing person i know x
$54
Anonymous
$54
Dominique
Go girl! Xx
$54
Trish
Thanks for making the climb for SIBUNZ!
$54
Rebecca Cargill
Best wishes Andrea. Enjoy the challenge!
$54
Anonymous
$54
Kush Ajam
All the best for the day, wonderful cause!
$54
W
$54
Nadezda Treibich
Good luck 😘💝😘
$54
Michelle Spath
Good Luck Oli!
$54
Steph Allerdice
Well done team J&J!!
$54
Toni Collier
Good luck!
$54
Joyce Gong
Go TT!!
$54
Joyce Gong
All the best!
$54
Anonymous
Go Team J&J
$54
Isobel Stoodley
Go Ash!
$54
Tracey Mealey
$54
Anonymous
Have fun and stay safe!
$54
Amanda Thomas
What a great fundraiser challenge! I have fond memories of climbing Mount Kosciuszko a few years ago with Neil and the kids- such beautiful rugged scenery ❤️
$54
Tania
Great cause Suze, right behind you :)
$54
Julie Ryan
Fabulous cause Joe. I wish you luck with your journey.
$54
Erica Tieu
Good Luck Suz! Its an amazing walk for a wonderful cause.
$54
Bel
$54
Mark Sapsford
You remain one of the finest humans, Brianna. Always doing things for others. Great stuff. Best wiahes with the challenge.
$54
Jan Schulze
Well done Jo !!!!
$54
Sophie Costa
Amazing work Amelia !
$54
Scott Buszard
Good luck, safe climbing and descent!
$54
Kate Marshall
Well done Suzanne for raising awareness of this important cause!
$54
Anonymous
$54
E And D Higgins
My mum was an arborist
$54
Jacob
$54
Arnica Mullins
Kickin goals!!
$54
Stef Neergaard
$54
Zac
Much like my Mrs. This is something I can enjoy getting behind.
$54
Peter Hawkes
Good luck Suz!
$54
Andrew Huang
Go Baz!
$54
Kate Plasto
Go Suz, you’re amazing! A fabulous effort for a very worthy cause.
$54
Britt Litton
This is amazing
$54
Christina Cho
In the wise ol' words of Marvin Gaye -- Cause baby there ain't no mountain high enough! 🫶 Off you climb -- woohoo! 👏👏👏
$54
Anonymous
$54
Geraldine Carson
Hope this inspires you to walk all the way back down the hill!
$54
Ash Castles
$54
Marie Emerson
Goodluck. We are all behind you. Xx
$54
Elke De Smet
awesome stuff🩷🩷
$54
Emerson’s 1
$54
Elke De Smet
awesome work🩷🩷
$54
Blanch’s
Good luck!
$54
Ruby St Ledger
❤️❤️❤️
$54
Megan Stephens
Go Emersoac!!!! Let's do this!
$54
Maddie
$54
Jane Greenbank
Well Done Suz
$54
Paul Youdan-smith
Good Luck Chris
$54
Sarah Borrell
Go Lucy! Look out for Jess xx
$54
Noel F
Heh mate,proud to say your a friend , go well and feel free to share to brigade.
$54
Dharsh Gnanasivam
Go Teresa! Amazing challenge!
$54
Emma Murray
Go Mark
$54
Joy
Go Glen Go!
$54
Emma Mcminn
Well done, Ash!
$54
Vinil Chandrashekar
$53
Kim Hansford
Crush it Chris!
$53
Vanessa Sequeira
Let's go, Team Geredov!!
$53
Kate Kim
proud to back you and this great cause
$53
Brittany Pain
Legend! You'll smash it 💪💪
$53
Kerrie Butler
Proud of you!!
$53
The Lewis Family
$53
Brielle
Proud of ya sis xx
$53
Gareth Emerson
Enjoy xx
$50
Anonymous
Well done Bri!
$50
Ethan
$50
Your Fav Rookie
Wooo good luck Glen!!
$50
Anonymous
$50
Kathryn Harris
Go Glen Go!
$50
Joana De Castro
You got this! Go Ang, Yan, Archie and Hugo! 😊
$50
Jenn Janicaud
Go Teresa!!
$50
Leo Luo
$50
Mary Scowen
Great work Jo and for a very good cause. Thinking of beautiful Tess often. x
$50
Craig Mccloskey
Good luck with the hike!
$50
Jeremy
Go for it!
$50
Pat
Best of luck Suz!
$50
Michael Correa
$50
Natalie Yeoh
All the best team J&J!!
$50
Harry Thornthwaite
Go Millie ⭐️
$50
Susan
You can do this!
$50
Neda Taghavi
Well done Olli
$50
Neda Taghavi
Go love, well done xxx
$50
Neda Taghavi
Go Lucy xoxo
$50
Hoang Phuc Phan
Lessgo briana
$50
Bác Thanh
$50
Anonymous
$50
Vanessa
1st Kosi Climb!! All the best Anna - you got this!
$50
Vanessa
Knight Ash, ascending Mount Kosi with knightly valor to conquer thy large rock! Have lots of fun!
$50
Natalie Yeoh
Go Simon!!!!!
$50
Vanessa
You got this Claudia! 1st Kosi Climb :)
$50
Shaman Sood
$50
Tony Agioski
Great work Lucy. Go get them !
$50
Andrea Emerson
$50
Meagan Correa
$50
Carla Lynch
Go girl!! Happy to train with you this month.
$44
Jaiden Right
💪🏾🏔️
$44
Christina Whittingham
$44
Claire Nancarrow
Good on you !!! Look forward to following your journey!
$40
Paul Woo
Great cause! You've got this Glen :)
$38
Ryan
$38
Daniela Fino
Well done Jo - so good to see the dedication to Tess x
$38
Petra Young
Good luck Glen!
$38
Flav
Always inspiring ❤️
$38
Anonymous
$38
Sim Chan
Dont throw up!!
$38
Anonymous
$38
Andrea Puig
Go Olly!
$38
Mark Tadros
$38
Andrea Puig
Go Lucy!
$38
Amy Loftus
Good luck Lucy!!! Great cause!
$38
Maryanna Perez
GOOOOO SUZ!!!
$38
Jyoti Samtani
$38
Philip Yu
$38
Paul Griebel
Good luck Lucy and thanks for supporting this important cause !
$38
Ashlyn Frost
You superstar! ❤️
$38
Andrea Puig
Go Kelly! Thanks for contributing even from afar.
$38
Xinyu
$38
Paul Griebel
Good luck Suz ! well done on raising so much for a wonderful cause.
$38
Gabrielle Adams
Well done J&J Kosi Climbers!!
$38
Nicky Spencer
Great cause Suz, I'll raise a glass for you while you trek.
$38
Warren Castles
Hope to see you again.
$38
Holly M
$38
Sarah Reid
$38
Anne
Have fun Sarah, I am cheering for you!
$38
Yola
$38
Anonymous
$38
Anna Gal
$38
C
Proud of you ❤️❤️
$38
Eunice
$38
Linda Bottom & Aster De Bock
$38
Anita Royle
Good luck for your hike - I know you will smash it 💥
$38
Karen Askins
Good luck Ash!
$38
Anonymous
$38
Nadia Grant
Good luck with the climb with your daughter!
$38
Lucie Turner
You continue to inspire us all, Jo! Behind you every step of the way. Love, Lucie, Dean and Emily
$38
Lye Lim Ng
Great work for the 3rd time! Go Lucy!
$38
Lye Lim Ng
Go Oli!
$38
Lye Lim Ng
Go Kelly!
$38
Jessica Gray
Amazing Craig.
$38
Helen Hall
Climb every mountain, sail every sea.... you know the rest. Go get 'em tiger xxx
$36
Jonah And Millie
$35
Georgia Vallance
Go get ‘em, Meagan! xx
$35
Anonymous
Go team, J&J!!! Fundraiser like the champions you are! Hike like mountain goat!!
$35
Ciara Nevin
$35
Jen D
$33
Lauren
Great work Loretta!
$33
Erzsebet Kruller
Sok sikert!
$30
Alicia Williams
Fantastic Ang! Best of luck to you and the family for the climb!
$30
Julia
$30
Vibs
!
$28
Sarah S
You got this!!!
$28
Amy Hayter
$28
Brentus Cookus
The lucky last $25
$28
Duncan Young
Good work Sarah. Hopefully uoi are carrying race fitness from Bondi to Manly Ultra!
$28
Bill Jeffels
Good luck Melinda. I'm sure you'll get there
$28
Maria Jeffels
Well done Melinda
$28
Bff
go Nat !
$25
Glenn Rosbrook
All the best team Geredov
$23
Madeline
Go GlenGPT!
$23
Therese D
Such a great cause! Good luck!
$23
Jack Alexandrovics
$23
Sanjit Vijayakumar
Get your steps in!
$23
Eashna
Hey! I know it isn’t a lot but it’s such a cool thing you’re doing! I hope it helps 😊
$23
Wendy Musulin
Goodluck Ange! The first few sections can be tough but I'm sure you'll power through it.
$23
Wendy M
Let's go Nic!!! Goodluck, I know you'll smash it!
$23
Stephanie Keir
You got this!
$23
Steven Granzow
Lets goooooo!!!
$23
Steven Granzow
Lets go Ang!
$23
Steven Granzow
Let's go Simon!
$23
Sonja O'hare
$23
Anonymous
$23
Lynette S
$23
Jen Morton
Great work!
$23
Imogen N
$23
Georgia M
Go mealsy!!
$23
Anna Lam
Well done Anna, good luck for the climb!
$23
Anna Lam
Great job Castles! You got this :)
$23
Anna Lam
Well done Andrea!
$23
Anna Lam
Good luck with the climb Bri - well done!
$23
Anna Lam
Yay Claudia! Well done and good luck for the climb
$23
Joe Maynard
$23
Fini Morais
$23
Calvin
$23
Sean Douglas
Let’s gooo
$22
Scott Richards-jones
Good luck Oli!
$22
Scott Richards-jones
Good luck Lucy!
$22
Scott Richards-jones
Good luck Kelly!
$22
Vince Limogmog
$20
Simon
$20
Joel Moffet
Amazing effort, cheering you on x
$20
Cali Jones
Go aunty Sarah!
$17
Andrea Puig
Go J&J!!!
$17
Isi
$17
George Emerson
$17
Sophie Edwards
Well done Craig! ♥️
$15
Paul
$12
Brooke Vella
You got this!
$12
Gaynor
Great cause Jo!
$12
Katie Street
$12
Anonymous
$12
Nerida
Good luck to all the J&J Kosi Climbers
$12
Erin
Best of luck!
$10
Millie T
$6
Jordan P
$5
Michael Karibi
$5
El P
Good on you Jo
$5
Dexter Emerson
YOU GOT THIS
Our Team Members
Simon Shiels
$139
LUCY DAVIES
$752
Mark Tadros
$235
Melinda Lewis
$109
Meagan Correa
$1,112
Mark Howard
$838
Chris Hudson
$482
Nicola Barnett
$304
Angela Geredov
$1,645
Andrea Emerson
$848
Loretta Rogers
$357
Kelly Sutton
$311
Anna Gal
$685
Craig Bell
$1,052
Brianna Chen
$880
Claudia Earl
$1,516
Ashleigh Castles
$927
Oliver Bonaccorso
$888
Bree Bonaccorso
$108
Nathalie Richmond
$465
Glen Strike
$1,000
Jo De Smet
$1,742
Balazs Szomor
$1,211
Amelia De Smet
$2,492
Teresa Tran
$1,071
Suzanne Hill
$2,938
SARAH THORNTHWAITE
$622
Amelia Thornthwaite
$50
Michael Hill
Our Fundraising Journey
