Press Release Stockholm, August 21, 2025
After 54 hours and 21 minutes, and 250 km of nonstop running, swimming, and navigating through the Stockholm archipelago, Team 6 SWE/AUS claimed victory in One Water Race 2025. It is their third win after previous triumphs in 2022 and 2024 – in what is already being called the most extreme edition in race history.
Just under two hours later, Team 1 AUSTRALIA reached the finish line. It was their fourth participation in One Water Race, and they have managed to reach the podium every single time – this time securing second place.
Only two out of ten teams managed to finish this year, as freezing conditions forced multiple medical evacuations – including two by helicopter.
– “This was the most dramatic race we’ve ever staged. The cold, the intensity, and the many medical emergencies show just how brutal this challenge is. At the same time, we witnessed an epic battle between two of the world’s strongest teams,” says Thomas Ogander, founder of One Water Race.
The World’s Toughest Endurance Race
One Water Race has rapidly established itself as the toughest endurance event in the world, combining running, swimming, and navigation nonstop through the Stockholm archipelago. Beyond sport, the race raises awareness of the climate crisis and the threat to our oceans, which absorb 90% of global warming.
The 2025 edition was broadcast live on TV4 Play for 65 hours – the world’s longest continuous sports broadcast – and distributed to 190 TV markets worldwide.
Science on the Edge of Human Limits
In collaboration with the Swedish School of Sport and Health Sciences (GIH), researchers conducted pioneering studies on athletes during the race. Using real-time sensors, they monitored heart rate, blood sugar, and body temperature – creating unique “race profiles” that reveal how athletes cope with extreme exhaustion, cold, and sleep deprivation.
This year’s focus was on cardiac function and the impact of nonstop strain over three days. The extreme cold also led many athletes to experience breathing difficulties – a new area of study for future races.
– The combination of cold, sleep deprivation, and extreme exertion allows us to study human limits in a way no laboratory ever could,” says Marcus Moberg, Associate Professor at GIH.
Quick Facts
- Winner 2025: Team 6 – SWE/AUS, finish time 54 hours & 21 min – Kristin Larsson, Daniel Larsson, Adriel Young and Johan Hasselmark.
- Runner-up: Team 1 – AUS, finish time 56 hours & 18 min
- Field: 10 teams from 7 nations, only 2 teams finished
- Distance: 250 km running, swimming, navigating – nonstop
- Prize money: USD 100,000
- Broadcast: 65 hours live on TV4 Play + highlights, distributed to 190 markets
Media Contacts
Thomas Ogander, Founder, One Water Race
thomas.ogander@onewaterrace.com | +46 707 49 00 85
Agneta Josephson, Media & Partner Relations
agneta.josephson@onewaterrace.com | +46 707 45 77 45
