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
$528
Anonymous
$528
Martin Silk
$317
Hummingbird Insight Pty Ltd
Thanks Micah and Mia for taking on this challenge for this worthy cause. The team at Hummingbird Insight are proud to be supporting you.
$264
Warwick Plunkett
$264
Nirelle Tolstoshev
Go Team Astellas Australia!
$250
Micah Yeung
$250
Jennifer Wong
$250
Heng & Hurst
Matched donation by Heng & Hurst
$211
Shayna Mancuso
Good luck to both of you on the climb, Micah! Thank you for doing this and can’t wait to see the pics.
$211
Darrell Dempsey
Well done Poss Love always Dollsey
$211
Heng & Hurst
Matched donation by Heng & Hurst
$211
John Wormald
$200
Mike Mera
Go Chris!
$132
Anonymous
$106
Display Builders
Good luck to youand the Astellas Pharma Australia Team ! Amazing cause to be fundaising for.
$106
Anonymous
$106
Brooke Collins
Well done mate and hope you're living your best life...:)
$106
Santina And Sylvie Panetta
Good luck Mikey. What a great cause
$106
The Icon Depot
$106
So What? Research
Well done Chris. See you on the mountain!
$106
Elise
Go team Astellas!
$106
Michael Burns
A great cause Mike, enjoy the climb.
$106
Katy & Colin
All the best on your climb.
$106
Ray & Babs Blackett
Best wishes Budge and Babs
$106
Anonymous
$106
Owen Smith
Go for it mate, well done.
$106
Fred Bangura
$106
Ian Carrier
Hi. I've donated primarily because my wife Lesley died of a non common cancer, (oesophageal) nearly 10 years ago. One of the quiet killers.
$106
Jonathan Harrison
What a great cause, you’ve got this 🥰
$106
Elise, Niece, Sprogs Xxx
This made my 2025 so far reading that you’re doing this, in memory of Nana. Proud family moment ❤️ Hope the blisters have healed by July!
$106
Sirintra Mayoe
You did great Mike, I'm proud of you.
$106
Max Norman
Hi guys! Thank you so much for doing this for Nana and for everyone else affected. I don’t envy you walking in Aussie heat! Love you both and looking forward to seeing you in a few months.
$106
Fish
Good work Plunky
$106
Sean Malone
$106
Kurt And Sandi Sims
Enjoy the stroll Mike! Great cause. Well done.
$106
Odonchimeg Ayush
$106
Otgonbayar Togtkhbayar
Love you so much
$106
Mike Plunkett
$104
Pittwater Roof & Gutters
All the best for your challenge 🧗 Great cause ❤️
$100
Graham Naylor
$100
Usukhbayar N
12.12 ❤️
$73
Asha White
Show those southerners how it's done on the North.
$71
Anonymous
$55
Vanessa Winley
$54
Julie Earnshaw
Love you lots xxx
$54
Jarrod Ling
$54
Deb Buch
Fantastic cause and well done for being a part of this Challenge.
$54
Adam Cairns
Good on you mate
$54
Anonymous
Well done on your continued generosity
$54
Michael Jones
Good work Mike
$54
Holly Trafankowska
$54
Anne Simpson
GO MIKE!!
$54
Morgan O'doherty
Good on ya Mike, best of luck.
$54
Liz’e Marett
Team King are behind you all the way! Xx
$54
Ellie Rourke
Go team!
$54
Rachel S
Wow! Good luck with this
$54
Amber And Mike Yates
Fantastic goal and wonderful charity! Well done guys x
$54
Karen Wyatt
Well done Chris. Great ache for a great cause
$54
Steve Bracken
$54
Kate C
Good luck great cause
$54
Chilli Fox Events
Well done Chris! Such a great cause - wishing you all the best with the challenge!
$54
Creative Advocacy Solutions
Matched donation by Creative Advocacy Solutions
$54
Dianne Kirk
$54
George Terpens
All the best on your mountain climb. Sorry I can’t join you!
$54
James Baker
Such a great cause. Hope you are both well. James
$54
Ryan Stafford
$54
Kevin & Belinda
All the best, Kevin and Belinda
$54
Christine Kemp
Hope you have a wonderful hike Mike! Well done in advance for supporting this great cause. Take lots of photos to share with us all..
$54
Erika
$54
Megan Salon
$54
Kisahn Kersten
All the best team!
$54
William Slack
Good luck Plunky All the best Will
$54
Russell Crawford
$54
Sue Anderson
Good luck 💕
$53
Anonymous
$53
Creative Advocacy Solutions
Matched donation by Creative Advocacy Solutions
$53
Michael (mike) Plunkett
What a great even to be involved with Jenny: congratulations to you & the Astellas Pharma Australia Team for organising & participating in such a worthwhile cause!
$53
Michael (mike) Plunkett
Thank you for organising Astellas All Stars participation in this amazing event Tina: wonderful of you - looking forward to achieving my personal & Team donation goals!
$53
Lisa Rippon
Love you Mike my good friend x
$53
Gavin Hirst
Good on ya Mike. Hope it’s good weather on the day. Beautiful part of the world to be doing a walk!
$51
Alison Kennedy
Talk about taking fundraising to new heights!! 😆 I’m sure you will smash it!
$50
Michael Leskovar
$50
Peter Casey
$50
Tania Dionisio
Fabulous work Michael 🙏🥰
$50
John Emmerson
Good luck Corrina - see you on the mountain.
$50
Ronda Dudley
I will always support you from a distance my darling friend xx
$50
Siddharth Oza
All the best Sir Plunkett!
$50
Jodie
Well done mate
$50
Scott Anderson
$44
Susan Frankham
Can't wait to hear how the WHOLE family does xx
$38
Stella Balogun
$38
Rose Hanbridge
All the best Michael to you and the team!
$38
Lance And Mel Davies
$38
Aaron W
Smashed the goal!
$38
Mark Leskovar
Good on you Cuz!!!
$38
Helen Mahony
Go Mike, and Astellas Team. Great to see the tradition continues to support RCA and Australians with rare cancers.
$38
Ryan Ashton
I was forced to donate against my will.
$38
Linda Zutitis
Totes amazing 💪
$38
Emma Cotterill
Good Luck Mike!
$38
Michelle Smith
Have fun Ando’s!
$38
Adam
Hope it’s sunny mate
$38
Anonymous
$38
Olivia Lane
Smash it Naylors!!! Good job xxx
$38
Steve Dempsey
$38
Corrina Anderson
Let's go All Stars! Looking forward to an incredible walk to the summit with the team.
$38
Daniella Yeung
Wish it was more. Love you both and good luck. Miss mum everyday.
$38
Pauline Plunkett
$38
Tina Naylor
$38
Lex Butchart
Love this Tina!! X
$37
Alessa Bounsall
Well done! Looking forward to seeing some photos of your adventure.
$37
Jenny Otgonbayar
$37
Simone Attfield
Great cause! Good on you Mikey! Xx
$37
Amy Jones
Absolutely outstanding cause!!
$37
Bilguun Odonbileg
from ur handsome cousin to my sweet sis
$37
Michelle Brownlee
$36
Jason Antonio
Love you Mike
$35
Tselmeg Ganbold
$30
Jasmine White
$28
Angie
Love you
$28
Lia Turner
Good luck Mia! What an amazing cause x
$28
Lauren Choukri
Absolute legend! So proud of you and such an important cause.
$28
Jamie Zamudio
$28
Kathryn Vlatko
$27
John Fitzgerald
On ya mate!
$23
Chantal Lyne
Awesome work guys! 🙌
$23
Anonymous
Sure Mike, no worries
$23
Chris Williams
Take my donation Mike, even though I’m retired and have no income.
$23
Brendan Toth
$23
David Cool Guy
Kill it mince meat!
$23
Steve O'connor
Hope it goes well...🙂
$23
Narelle Barnes
Nice work Mike, goodluck!
$23
Nicole Dive
Go Tina!!! What a great thing to do for such a great cause!
$23
Heng & Hurst
Matched donation by Heng & Hurst
$23
Valma Leskovar
go Michael!
$23
Megan Beauchamp
Go Micah! Hope you guys do well!
$23
Uncle Phil And Auntie Ann
Great cause, good luck love auntie Ann and Uncle Phil
$21
Kaelah Reyes-braithwaite
$21
Stazia Turpens
$20
Emily Eriksson
Go Mike. Ia sure you will do fantastic. Great cause.
$20
Theodore Seng
See you there :)
$17
Naaman Bonner
$11
Deb O'connell
Fantastic mate, wonderful experience for a needed cause.
Our Team Members
Tina, Rich, Brody & Kyron Naylor
$929
Richard Naylor
Brody Naylor
Jennifer Wong
$500
Michelle Brownlee
$37
Mark Latham
Catherine Latham
Micah and Mia Yeung
$2,285
Kaelah Reyes-Braithwaite
$21
Thomas Braithwaite
Martin Silk
$528
Katrina Silk
Liz Mach
Shane Young
Chris Higson
$1,164
Mike Plunkett
$3,869
Megan Salon
$54
Ben Salon
Jenny Otgonbayar
$501
Lynda Rigby
Elise Brown
Shaun Maher
Scott Anderson
$346
Go you goodman