Sienna Stuart-Williams

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66
kms

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.

Last year during my Honours year I worked with this organisation and got to see first-hand the difference they make in the lives of people living with rare cancers. These often-overlooked cancers collectively account for approximately one-third of all cancer diagnosis in the country. Rare Cancers Australia provide both financial support and patient guides who help patients and their families navigate their healthcare journey with diagnosis that don't often come with as much support as more 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.

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.

REMEMBER:  RCA is a Federal Government-classified Health Promotion Charity. All donations are fully tax deductible.

My achievements

First donation received

Raised 50% of your target!

Raised 75% of your target!

Page personalised

First blog post published

Page shared

Target increased

Target reached

Challenge conqueror!

Thank you to my sponsors

$527.50

Andrew Stuart

$263.75

Ricky Sparkle Elliott

Go you good thing

$263.75

Joanna Stuart

$106.12

Jane & Jan

Go Sienna You’re fab🥰

$106.12

Faye Wells

Lift your feet babe. xxx

$100

Anonymous

Hola

$54.12

Lauren Kulesza

So proud of everything you do!

$54.12

Kirsten Stewart

Good luck Sienna!!!!

$54.12

Sienna Stuart-williams

$54.12

Michael Granr

Good luck and enjoy Sienna!

$54.12

Sophie Beasley

$54.12

Andrew Thomas

$50

Glenn Anley

Great cause Sienna

$50

Daniel Mosbauer

Amazing work, slay x

$43.60

Jo Thomson

A fantastic cause..all the best

$38.33

Holstar

Sorry ide do more but u know how it be $$$ congrats doll proud of u

$38.33

Katrina Vanin

You have got this!!! Go go go!!!

$35

Jamie

$33.15

Stacy Butler

$33.15

Kiersten Sorensen

Go stew, proud of you👏👏👏❤️

$27.81

Catherine Haintz

Go Girl, love the initiative of home made gifts

$22.58

Charlotte Velona

$22.58

Lauren Taylor

Go girl!!!! Climb that mountain 🙏

$22.58

Sarah Mcpherson

Love the idea!

$22.58

Sarah Lawrence

Go girl!

$22.58

Alice England

Best of luck with the Kosi challenge Sienna!

$22.58

Ainslee Minihan

$20

Fade

Go Sienna!!

$17.16

Tashi Graeme-baker

$11.65

Lara Davies

Thanks for the coffee scrub!

$11.65

Jess Jiang