Kosci50
Taking on endless happy trails and packed full of everything that makes an ultra great, without the mega distance, the Kosci50 is built around being runnable and achieveable.
Race Category
Running Stones
2
Finals Access
Mixing ski resort vibes, snow gum forest trails and with the epic trail community at its heart – the Kosci50 is equal parts fun, achievable and challenging. It takes everything great about the longer courses – the scenery, happy trails and support – and packages it into a 50km bundle that gives you “I’m an ultra-runner” bragging rights without the crazy KMs.
RACE DETAILS
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THURSDAY 27 NOVEMBER 2025 |
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| ENTRY INCLUSIONS | Race entry, athlete t-shirt, finisher medal, athlete 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 and from start and finish line venues. Details on the Transport & Parking page. |
| MINIMUM AGE | 18 years of age on race day |
| MANDATORY GEAR | All runners must carry mandatory gear during the race. Details are on the Mandatory Gear page. |
| TOTAL ALLOWABLE TIME | 13hr 30min |
| CUTOFF PACE REQUIRED | 3.71 km/hr |
| FIRST FINISHER | 3hr 38min (10:38am) |
| FINAL FINISHER | 13hr 30min (8:30pm) |
| TIMING RESULTS | The following age divisions for both male and female will be used for race results (age on race day will be used to 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 | 5 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 |  The Kosci50 is a UTMB World Series 50K Event. Finishers of Kosci50 will receive 2 running stones. |
COURSE DESCRIPTION
Picture 50km of trail running heaven, and you’ll have a pretty good idea of what’s in store for the Kosci50.
Starting at the ski hub of Perisher, our Kosci50 runners will get to experience the alpine plateau trails, and stunning views across the Snowy Mountains, before descending down to Bullocks Flat. From here, runners will ascend up the Thredbo Valley, making their way to the highest point on their course at Eagles Nest, before a quick descent to the finish line at Friday Flat.
Runners can expect endless happy, flowy and fun trails, stunning views, and an amazing alpine vibe throughout their Kosci50 journey - the perfect 50km for the first time ultra-runner!
*Maps subject to change, and may changes for reasons outside of the Race Organisers control. Select the Time Charts tabs to view the cut-off times for leaving the relevant checkpoint. Time Charts show estimated fastest and slowest times for each race leg and should be used as a guide only. Where the slowest times are greater than the cut-off time, the cut-off time will supersed the sloest expected estimates. If you miss the cut-off then you must follow the directions of officials. Please note that in bad weather conditions, cut-offs may need to be brought forward during the event.
KEY INFO FOR KOSCI50 RUNNERS
All the information you need to know before starting an extraordinary adventure.
SUPPORT CREWS
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 marked above as supported. Support crews can access Eagles Nest waterpoint 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 50km distance.
For more helpful information please visit the Transport & Parking page and Spectators page.
