All people living with rare cancers
I am climbing for rare.
The Kosi Challenge is the single signature fundraiser for 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
$16.64k
Matched Donation From Dgb Health
$1.04k
Jono
Go baby go! Great effort for an amazing cause!
$1,000
Steven Lam (intuitive Consulting)
Good luck and good on you for doing something to raise money and awareness for something dear to your heart
$888
The Do-vuongs
your climbing not because it’s easy, but because every step carries hope. lets go sis!
$528
Hoa Hong
$528
Strafurd York Legal
$500
Entod Pharmaceuticals Ltd
$264
Chris Burton
Go Gretchen!
$264
Tram Hoang
Good luck em
$250
Simon Hay
Go Cint.
$250
Muja
Good luck Gretchen!
$211
Trang Dinh
Goooooooo Jen 👏👏👏💪💪💪💪
$211
Love From The Vuong Phamily
Amazing cause cuz, so proud of you 👏
$211
Thoai Nguyen
Good Luck Jen! What you did is so meaningful 🥰
$211
Jin On
Sending you all the strength and energy for the big climb! You’ve trained so hard for this, now go conquer it!
$211
Victoria Martin
You are always doing great things - Go superwomen!
$200
Anonymous
Chuc ch năm mới bình an khoẻ mạnh
$158
Anonymous
Go go go jen!!
$158
Monique Jonson
Go get them Jenn
$158
Matt Zeller
go Jen!
$158
Rosey. R
Hi how did you go. Make sure you have a spa this week.
$150
Binh Truong
Good Luck from your girls and Hugo
$106
Anonymous
You are very brave, cheers
$106
Joseph & Vi
Let’s goooo
$106
David Tamby Rajah
Keep it up Jennifer, respect from South London.
$106
Elizabeth Jequier
Go Jen! You can do it. What a great cause x
$106
Nigs
Smash it Jennnnn!
$106
Huy Pham
Amazing!!! Very inspiring
$106
Sass
$106
Anonymous
Good luck to you em
$106
Steve Graham
$106
Jacinta Lawson
$106
Natsu Rycroft
Go Jen!!
$106
Karyn Lloyd
$106
Byron
All the best Jen. Great cause and doing it with great people.
$106
Craig Mccallum
Having a rare cancer myself, this is a cause close to my heart. Great work Team Arrotex!
$105
Elizabeth Loads
Go Team!
$104
Janet Luong
So proud of you Chi for such an amazing cause! You’re inspiring ❤️ Love Alana, Janet & Alan x
$104
Creative Advocacy Solutions
Matched donation by Creative Advocacy Solutions ⚡️
$100
Kate Jamieson
Wonderful cause and hope the weather is kind to you all.
$100
Toby Doan
$100
Binh Truong
Good luck!!
$100
Cherie
What an incredible challenge for a fantastic cause. Though the climb may be tough, the views will be breathtaking, and your impact be huge! Wishing you strength for every step to the summit!
$100
Rob Beveridge
Great work Jen & team Arrotex!
$100
Andrew Hosking
make every step count Jen - go for it!
$100
Jennifer Luong
Team bbq fund raiser was excellent guys.
$100
Kat & Jezz
Great cause, Jen!
$100
Daniela Bendistinto
Way to go and good luck!!!
$100
Hoa Hong
$100
Nicholas Le
Go Aunty! Climb that mountain
$91
Ivo
Best of luck Jen. Great Cause.
$76
Hank Hong
$73
Zeno Chen
You are so great！
$60
Hong Luong
Support from your team. Go for it
$58
Gretchen Hamilton Gretchen Hamilton
$56
Adelle Bottaro
So proud of you all! Go Team Arrotex :)
$54
Alia Pooley
Go Jennifer!
$54
Linda Vu
Great cause! All the best and good luck!
$54
Phi Pham
$54
Donovan Murphy
Good luck!!!!
$54
Regan Mccracken
Best of luck Jen. Great cause!
$54
Donna Gilbert
Congratulations on your incredible efforts! Sending all our support!
$54
Rose Mollica
$54
Tedros Fetwi
All the best, Jen. Great cause, wonderful work!!
$54
Terése
Go Jen!
$54
Paul
Great cause and enjoy the hike too.
$54
Peter Leung
Good luck in your challenge!
$54
Kashka
Go Jen!
$54
Yvonne
Very proud of you! Cancer treatment has come a long way thanks to fundraising for important research. Hope your training goes well.
$54
Ha-le Patel
Good luck and have an amazing time! Xxx
$54
Philip Ashley-jones
You are an inspiration. Good luck climbing another mountain!
$54
Uyen Luu-heiskanen
$54
Anonymous
You are such an amazing person Jen. Good luck xx
$54
Joanne Farrell
Go you!! Have a great day.
$54
Anonymous
A great cause - you go Jen!!!
$54
Andrew Cuttle
Great effort to take on the challenge and generate support for this great cause. Wishing you the best and enjoy the climb!
$54
Vince Mollica
💪Great work
$54
Chantelle Dowdell
You are bloody amazing Jen!
$54
Quynh Nguyen
You can do it!
$54
Rafael Erlich
You are going to make it Jenny. You will!!
$54
Tina Huynh
You will make it sis , yay yay 🙌
$54
Kurt Spence
Good luck team, enjoy the hills 😁
$54
Guy Youngman
Good on you Jen. I hope the day is clear and sunny for the views. When I went a few years ago we almost got blown off….
$54
Heather
Go girl!!!
$54
Richard Gerke
Have fun with this good event
$54
Mala Ganpati
Let’s go Jen!!
$54
David Nadelman
$54
Menicksha Raman
All the best Jen! Can’t wait to hear all about it!
$54
Jo
$54
Angela Liu
Good luck Jennifer !
$54
Anita
$54
Kurt Spence
Good luck Gretchen. This is a wonderful cause and well worth the mountain your about to clime.😊
$53
Louise Hurley
Well done Cint. Another great achievement.
$53
Ros Hay
Well done Cint
$50
Cassi Dang
All the best Gretchen!
$50
Anonymous
Best of luck with this endeavour!
$50
Ivo
Be first to the top JL!!!
$50
Grace
Go Jenn! Have fun doing the challenge :)
$50
William W
$50
Angie Hou
$50
Jenna Hogan
You go superwoman 💪♥️
$50
Caroline Guerbet
Go Arrotex Team! Climb strong and make it count!
$38
Tom Zhang - Devote Real Estate
TOM ZHANG - DEVOTE Real Estate
$38
Jenny Nguyen
GO JEN!!
$38
Bobby S
$38
Paul Blanc
$38
Hugh Vivers
Keep up the good work!
$38
Julie Shannon
Great cause Rose. Good luck!
$38
Katrina Touzeau
Have an amazing time and take lots of photos!
$38
Maral L
Well done xx
$38
Alexis Stockwell
Your amazing Jen!
$38
Paul Wheat
All the best for great cause
$38
Anonymous
$38
Will Mumby
Go team Arrotex!!!
$38
Mark Scott
$38
Creative Advocacy Solutions
Matched donation by Creative Advocacy Solutions ⚡️
$38
Khoa Huynh
Go Jen go!
$38
Camilleri
$38
Edwin
$38
Michelle Clift
Go Jen! Climbing: the best way to get high legally!
$38
Tom
Go get em!!
$38
Monisha Nair
$38
Mia M
$38
Davina Lau
You can do it Jen!
$38
Sathya Walisinghe
God Luck Jen!
$38
Wayne
Good luck!
$35
Anonymous
$35
Maria Agostino
Good luck Rose. Great cause.
$35
Steven Chung
Good luck Jen!
$28
Anonymous
drink water
$28
Stewart Kellett
$28
David T
$23
Lawrence Chan
Good luck team!
$23
Rowena Wolahan
$23
Nicole Van Dijk
Great work Jacinta and team!
$23
David T
You can do it!
$23
Alice Tam
:)
$23
Arthur Mrozek
$23
Don Kim
$23
Nicole Monro
$23
Daniel Armstrong
$23
Natalia Ulyanina
$23
Cale Whiting
$23
Jimmy Hoang
$23
Tom Ferguson
Go team Arrotex!
$23
Girish Nagpal
$23
Mark Vien
Good luck
$23
Bobby Sin
Awesome stuff!!! 💪💪💪
$23
Cara Markovic
Amazing effort Jacinta, Rose, Jennifer and Gretchen!
$23
Jennifer Hoang
$21
Felix Kusuma
ganbatte
$20
Daniel Pacey
$20
Shapthavy Ganeshkumar
$20
Anonymous
BMWTO
$20
Anonymous
$20
Anonymous
Go Jen!
$12
Anonymous
$12
Anonymous
All the best!
$10
Anonymous
$10
Anonymous
$10
Anonymous
$10
H Luong
$6
