The Ultra-Trail Kosciuszko by UTMB® is a world-class trail running event set against the stunning backdrop of Australia’s Snowy Mountains. Taking place from 27–29 November 2025, the event offers four distinct race distances—161 km (KosciMiler), 106.5 km (Kosci100), 50 km (Kosci50), and 32 km (Kosci30)—catering to elite athletes and passionate trail runners alike. Each course winds through alpine meadows, snow gum forests, and rugged terrain, showcasing the natural beauty of Kosciuszko National Park. All races culminate in the scenic village of Thredbo, providing a festive atmosphere and rewarding finish. As part of the prestigious UTMB World Series, the event combines technical challenge with awe-inspiring landscapes for an unforgettable racing experience.
Races
161 km
106.5 km
50 km
32 km
Race Date:
28 November, 2025
The KosciMiler is a 161 km ultra-endurance trail race within the Ultra-Trail Kosciuszko by UTMB®, featuring 5,000 meters of elevation gain across the challenging alpine terrain of New South Wales' Snowy Mountains. The next edition takes place on 28 November 2025, with runners finishing in the iconic mountain village of Thredbo, Australia.
Weather based on historical averages.
FAQs
What is the Ultra-Trail Kosciuszko by UTMB KosciMiler?
How long is the Ultra-Trail Kosciuszko by UTMB KosciMiler?
Where does the Ultra-Trail Kosciuszko by UTMB KosciMiler take place?
What is the elevation gain of the Ultra-Trail Kosciuszko by UTMB KosciMiler?
How can I prepare for the Ultra-Trail Kosciuszko by UTMB KosciMiler?
How do I choose the right training plan for the Ultra-Trail Kosciuszko by UTMB KosciMiler?
The KosciMiler is a 161 km ultra-endurance trail race within the Ultra-Trail Kosciuszko by UTMB®, featuring 5,000 meters of elevation gain across the challenging alpine terrain of New South Wales' Snowy Mountains. The next edition takes place on 28 November 2025, with runners finishing in the iconic mountain village of Thredbo, Australia.
The Ultra-Trail Kosciuszko by UTMB KosciMiler is 161km long.
The Ultra-Trail Kosciuszko by UTMB KosciMiler takes place in Snowy Mountains, Kosciuszko National Park.
The Ultra-Trail Kosciuszko by UTMB KosciMiler elevation gain is 5000 meters, which Runna classifies as a Hilly race.
The best way to train for the next race is to use a personalized training plan that takes into account your current running ability, schedule, and preferences.
This will help you steadily improve your running performance and get ready for the race without risking an injury.
Check out our training plans to find the best running program for your goals!
Which plan you choose will depend on your experience, schedule, objectives, and the date of the race.
Runna offers personalized training plans for every runner and every goal: Whether this is your first, 10th or 100th race, we'll help you get the most out of your training and smash your goals.
Check out our training plans to find the best running program for your goals!
What is the Ultra-Trail Kosciuszko by UTMB KosciMiler?
The KosciMiler is a 161 km ultra-endurance trail race within the Ultra-Trail Kosciuszko by UTMB®, featuring 5,000 meters of elevation gain across the challenging alpine terrain of New South Wales' Snowy Mountains. The next edition takes place on 28 November 2025, with runners finishing in the iconic mountain village of Thredbo, Australia.
How long is the Ultra-Trail Kosciuszko by UTMB KosciMiler?
The Ultra-Trail Kosciuszko by UTMB KosciMiler is 161km long.
Where does the Ultra-Trail Kosciuszko by UTMB KosciMiler take place?
The Ultra-Trail Kosciuszko by UTMB KosciMiler takes place in Snowy Mountains, Kosciuszko National Park.
What is the elevation gain of the Ultra-Trail Kosciuszko by UTMB KosciMiler?
The Ultra-Trail Kosciuszko by UTMB KosciMiler elevation gain is 5000 meters, which Runna classifies as a Hilly race.
How can I prepare for the Ultra-Trail Kosciuszko by UTMB KosciMiler?
The best way to train for the next race is to use a personalized training plan that takes into account your current running ability, schedule, and preferences.
This will help you steadily improve your running performance and get ready for the race without risking an injury.
Check out our training plans to find the best running program for your goals!
How do I choose the right training plan for the Ultra-Trail Kosciuszko by UTMB KosciMiler?
Which plan you choose will depend on your experience, schedule, objectives, and the date of the race.
Runna offers personalized training plans for every runner and every goal: Whether this is your first, 10th or 100th race, we'll help you get the most out of your training and smash your goals.
Check out our training plans to find the best running program for your goals!
More
Sport:
Running
Tags:
UTMB
Nature
This event listing is for informational purposes only. Runna is not affiliated with, endorsed by, or sponsored by Ultra-Trail Kosciuszko by UTMB or IRONMAN Group. All event details are based on publicly available information and are provided solely to help users discover running events. Runna does not use any official logos, images, or proprietary content from this event or its organiser. Any trademarks or names mentioned are used descriptively to identify the event in a factual manner. For the most accurate and up to date information (including to register or purchase an entry to the event), please visit the Ultra-Trail Kosciuszko by UTMB website.
