Make it Brain team for Rare Cancers
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 cancers, in memory of and with those living with rare cancers 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!
P.S RCA is a Federal Government-classified Health Promotion Charity. All donations are fully tax deductible.
Thank you to our Sponsors
$150
Kai Rijgersberg
$106
Mona Fasel
$106
Anonymous
Go Dutchies! Van je schoonouders
$106
Alison Keetley
What a great cause to support Sig. Enjoy the climb.
$106
Adelaide Webster
Good luck Sigrid and Ed
$106
Rik, Anne & Ava
Go go go, Sig & Ed! 👏 🏔️ 💃🕺
$106
Joerg Klug
$106
Embassy Creative
Make It To The Top, Make It Brain!
$106
Dave
Least we can do to support you
$100
Keiran Mccarthy-reece
$100
Duncan Purvis
Go for it Sigrid!!
$100
Nosey Parker Research
Go Sig!
$100
Meagan Correa
See you on the mountain!
$64
Sigrid Rijgersberg-von Stockausen
$54
Sven Von Stockhausen
$54
Megan Diaz Bauste
Thank you for elevating this cause.
$54
Sarah Peaocck
Wonderful cause Sigrid and Good Luck! Xx
$53
Edwin Rijgersberg
$50
Molly Webster
Go Ed !!!
$50
Kris
Have fun and a great walk Sig!
$38
Stuart Horgan
Stuart and Tracie
$38
Go pap