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Bringing the alpine ultra experience to Australia, the Kosci100 takes you through alpine meadows and snow gum bush, as well as to the summit of Australia’s highest peak – Mt Kosciuszko

Race Category


Running Stones


Finals Access


105 KM

Elevation Gain

3000 M+

Start Date

Friday 29th November 2024

Race Start

TBC - 07:00

Max Allowed Race Time

28 Hours



Whether you’re tackling triple digits for the first time or are an experienced ultra-junkie – the Kosci100 is a delight. Super runnable trails will keep a smile firmly attached to your face while they take you through alpine meadows and past granite outcrops, through crystal clear streams and over the summit of Australia’s highest point – Mt Kosciuszko. With unrivalled support crew access, an epic social buzz and a highly achievable course, this is 100km of trail running bliss you won’t want to miss.


Kosci100 FRIDAY 29 NOVEMBER 2024
ENTRY INCLUSIONS Race entry, athlete t-shirt, finisher medal, finisher gift, fully stocked checkpoints, drop bag service, on-course medical support and assistance, course photography (able to purchase during rego).
TRANSPORT Shuttle services will be available to the start venue. Details on the Transport & Parking page.
MANDATORY GEAR All runners must carry mandatory gear during the race. Details are on the Mandatory Gear page.
MINIMUM AGE 18 years of age on race day
FIRST FINISHER 9hr 14min (4:14pm)
FINAL FINISHER 28 hours (11:00am, Saturday)
TIMING RESULTS The following age divisions for both male and female will be used for race results (age on race day will be used determine your age division): 18-19, 20-34, 35-39, 40-44, 45-49, 50-54, 55-59, 60-64, 65-69, 70-74, 75-79, 80-84, 85+
AWARDS & PRIZES 1st place overall male and female in Kosci100 - $750 (AUD).
10 fastest male and females receive a trophy
5 fastest male and females receive free entry to the following year’s event.
Trophies will be awarded to 1st in each division
UTMB World Series ws100KM
The Kosci100 is a UTMB Worlds Series 100K Event. Finishers of Kosci100 will receive 3 running stones.


Made with both the 100km first timer and ultra-endurance junkie in mind, the Kosci100 course is about as fun as 100km running can get.

We’ve got some exciting new developments planned for the 2024 event, thanks to some newly finished trails in the area that we’re excited to take runners on, as well as taking learnings and listening to feedback from the 2023 event on what you liked and what you didn’t.

We had hoped to be in a place to be able to share these in advance of entries opening for 2024, however as is the way with events, we have to make sure we tick all the boxes before we release courses to the public, and we still have a few more boxes to tick before we can do that.

We want to be as open as we can about what you can expect for the 2024 event ahead of entries opening, so here’s what we can say for now:

  • Kosci100 course will be of a similar nature to 2023 in terms of distance, within 8% of the category distance
  • Total elevation gain for the Kosci100 will increase by between 5-10% from 2023
  • Overall cutoff time will remain the same, and cutoff pace will remain the same as 2023.
  • The new course will see a significant decrease in the amount of sealed surface used.
  • The number of Aid Stations on course will remain similar for all distances as 2023.
  • The number of support crew access points for the Kosci100 will remain similar to 2023.
  • The finish line for all distances will remain at Friday Flat in Thredbo.
  • The start line will be shifting in 2024 to a new location within the Snowy Mountains area.
  • We will be running shuttle buses to all start lines from Thredbo and Jindabyne – these will be available to book through your MyEvents account. All start lines will have plenty of parking for supporters.
  • The best places to book accommodation are Thredbo or Jindabyne.

Overall – the nature of vibe of the courses we’re trying to create will be the same – amazing scenery, happy trails, and ultimately a challenging but achievable event.

We are working closely with stakeholders to lock these in, and we hope to communicate these with you as soon as possible to help with your preparation and planning. Stay tuned for updates and we’ll share them with you as soon as we can!



All the information you need to know before starting an extraordinary adventure.


The Kosci100 has checkpoints along its route, with differing levels of service, support crew access and supplies. The Kosci100 checkpoints offer you the opportunity to refuel, rehydrate, see your support crew and prepare for the next leg of your journey!
Read more about checkpoints


A drop bag service will be available which allows you to have your own personal supplies (gels, food, change of socks, shoes, shorts, lubricant, etc.) available at certain check points or at the finish. Please see the time charts above for information on which checkpoints have drop bags.
Read the rules on drop bags


Every runner at Kosci will have to carry mandatory gear. The mandatory gear list contains what we believe is the absolute minimum to keep you safe during the event and in the Snowy Mountain’s unpredictable weather systems. For Kosci100 runners, your gear will need to be checked pre-race.
Read Mandatory Gear rules


The Kosci100 course is publically accessible throughout the year , offering the opportunity to train on course prior to raceday. However note that many sections are covered in snow in the colder months.

Please take care and give way to members of the general public when training on course.
Read about Training & Nutrition


We love support crews almost as much as our runners at Ultra-Trail Kosciuszko by UTMB – you are always the most colourful (and loudest!) and a huge part of the magical atmosphere of the whole weekend.

You also have the very important job of getting your runners to the finish line.

First job for support crew is to read the support crew section in the Runner Guide, available one month before the event. It contains important information you will need to know for the event.

To keep the event manageable as well as fair and safe for all athletes, and to make sure support crews do not get lost, there is some information that support crews need to know.

  • Support crews are allowed to assist runners at all Checkpoints except for CP6 at Trout Hatchery.
  • Support crews can access Eagles Nest Checkpoint via the Kosciuszko Express Chairlift. You can book lift passes here.
  • Support crews may only assist their runners within 200m either side of the checkpoints. Support Crews cannot run alongside their runners at any point on the course outside of the checkpoints.
  • Pacers are not allowed for athletes in the 100k distance.

For more helpful information please visit the Transport & Parking page and Spectators page.

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