Dialog Box

10 years of the Kosi Challenge

The Kosi Challenge began in 2013 with Rare Cancers Australia’s co-founders Richard and Kate Vines embarking on the Parliament 2 Peak walk from Canberra to Mount Kosciuszko in an effort to raise awareness for rare and less common cancers.

Since then the Kosi Challenge has grown bigger than Richard and Kate could ever have dreamed.


Over 2,100+ Kosi Challengers in 10 years

$3 million+

In excess of $3 million raised for patients diagnosed with a rare or less common cancer

450+ km's

Over 450+ km's climbed for Australian's living with a rare or less common cancer


An estimated 520,000 Australians diagnosed with a rare or less common cancer since the Kosi Challenge started

Why we climb

For people living with a rare cancer, treatment options are limited and mortality is high. In Australia each year, around 52,000 people are diagnosed with a rare or less common cancer; 25,000 won’t survive. Coupled with the exorbitant financial burden of non-subsidised treatments and a lack of information and support, it can be a very lonely and uncertain journey.

No Australian should have to go through their cancer journey alone.

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raised by 608 fundraisers with over 5617 donations

Help us reach our $500,000 goal

Virtual Kosi Challenge

2021 was our biggest Kosi yet! On our 10 year anniversary in 2022 we want to go even bigger and better for those diagnosed with a rare and less common cancer. With restrictions on how many participants can climb Mount Kosciuszko, we are offering the first-ever Virtual Kosi Challenge for those who can’t join us on the day.

The challenge is simple: walk or run 25 km’s between the 1st – 19th of March in memory of the 25,000 Australians who lose their battle with rare cancer every year. Or for a harder challenge, you can choose to go further.

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Top Kosi FAQs

When is the event and what time does it start?

Kosi Challenge is an all-day event on Saturday, 19th March 2022. You can choose your own start time from the list below. Due to the high number of participants, it is crucial that you arrive 20 minutes prior to your start time to allow for registration and event briefing.

Start times are:
  • 7.15am Merritts Track walkers only
  • 7.30am Merritts Track walkers only
  • 7.45am Merritts Track walkers only
  • 8.00am Merritts Track walkers only
  • 8.15am Merritts Track walkers only
  • 8.30am Merritts Track walkers only
  • 8.45am Merritts Track walkers only
  • 9.00am Merritts Track and/or Chairlift
  • 9.15am Chairlift only
  • 9.30am Chairlift only

Please note:

  • If you wish to take the chair lift up the mountain, you need to pre-purchase a chairlift pass. The chairlift opens at 9am, so walkers must choose a start time after this.
How do I register and when do registrations close?

Go to the registration page. Online registrations close at 12pm on Friday 11th March 2022. Depending on numbers, event registrations may close earlier.

Registration for the Virtual Kosi Challenge will remain open until Saturday the 19th or March.

What are the costs? (event registration, chairlift passes, accommodation, and national park entry)
  • Registration: $80.00
  • Chair Lift Pass $15.00
Child (under 17)
  • Registration $30.00
  • Chair Lift Pass $11.00

Discounted accommodation is available for participants. Please contact Nicole Thrum, Events & Groups Manager Thredbo, direct on 02 6459 4184 and mention Rare Cancers Kosi Challenge to receive your discounted room rate.

If you drive your car into the National Park you will be required to purchase a Parking Pass. The cost is currently $17.00 per car per day. 

See website for further information.

What does my registration fee cover?

The registration fee includes a RARE cap that you will receive on the morning of the event, as well as administration costs, event insurance, associated fees and promotion.

Since its launch in 2013, the event has raised over $3 million for patients and invaluable public awareness for rare cancers.

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