Welcome to the Origin of Swimrun!

When ÖTILLÖ started in 2006 no one knew it would be the start of the swimrun movement around the World. Our family of races and racers is now growing in many countries as we keep adding races to the ÖTILLÖ SWIMRUN WORLD SERIES. This is the space to follow if you want to be on the cutting edge of the sport. All because of a drunken bet!

Nadja Odenhage
International partners
  • Head
  • Campz Addnature
  • Garmin
  • Vivo Barefoot

You are now entering into our world

ÖTILLÖ is the origin of Swimrun, a new endurance sport driven by respect and dedication. Swimrun is about experiencing nature in the purest possible way, with Respect for yourself, for your team partner, for others and for the environment.

The ÖTILLÖ Swimrun World Series is the premium brand in Swimrun providing sustainable events of the highest quality which challenge your mental and physical endurance. We are dedicated to recreate the ÖTILLÖ experience in unique places around the world and to inspire the growth of a community that shares our values.

The spirit of swimrun is based on teamwork, motivation, fun and passion. We want to bring you all of these emotions, we want to challenge you and we want to give you a fantastic adventure. These are all the reasons of why we have decided to create unique races in unique places. We want to share our world with you!

On this site you will find the legacy of our sport and also the future of our experience. You will be challenged and you will be respected. This is where you will find all information regarding the ÖTILLÖ Swimrun World Championship, The ÖTILLÖ World Series and the ÖTILLÖ Sprints. You will also find everything that makes for a swimrun life; training, adventures and community.

As we see the sport from a sustainable angle we want to be part of conserving the nature we are in and we want to give back to those less fortunate. At every race location we work with local environmental organisations and through our donations to and our work with #Swimrunforlife we want to support those who are chasing the dream of safety over land and water.

In social media you will find us under @otillorace and #otillo

Welcome to our family!

The origin to the Swimrun movement and ranked as one of the toughest endurance challenges in the World (CNN 2012)

The ÖTILLÖ Swimrun World Series races are Qualifiers to ÖTILLÖ, The Swimrun World Championship, these races will challenge you as a team.

The ÖTILLÖ Swimrun Sprint Races are entry level races as an introduction to this inspiring sport in beautiful places; there are no time limits here.

About swimrun

Swimrun is the sport that was born from a drunken bet. In 2011 it got the name from Erika Rosenbaum, one of our ÖTILLÖ Swimrun World Championship podium finishers. It is a team-sport based on two persons travelling through nature and time, completely dependent of each other.

The team alternates between running and swimming along a pre-marked course in nature; it can be between islands or between lakes. As a team you race within 10 metres of each other, you share the experience, the fun, the beauty and the suffering. Swimrun is emotion!

In 2002 Anders Malm, the owner of Utö Värdshus (the finish line hotel of ÖTILLÖ), his friend Janne Lindberg and some of his staff (the Andersson brothers) had a late night in the bar. They challenged each other – “Last team of two to Sandhamn pays for hotel, dinner and drinks”. Two teams of two started the next morning with the only rule being that they had to pass the three different restaurants on the islands between the start and the finish. The last team at the restaurant had to drink and pay what the team ahead of them had ordered for them. It took them more than 24 hours and they were too tired to party on arrival. They tried again the year after with the same result. We call them the Original 4.

In 2006 Michael Lemmel and Mats Skott were asked if they could make a commercial race out of their crazy challenge. The first couple of years only 11 teams started and only two managed to finish within the time limits. Then something happened and the teams learned that the only way to race is by not stopping, with constant movement. Today the race is internationally recognized as the SWIMRUN WORLD CHAMPIONSHIP and has been ranked by CNN as one of the toughest races in the World.

The sport of Swimrun was born!


ÖTILLÖ Utö 2017 race report

ÖTILLÖ Utö 2017 – the biggest ÖTILLÖ Swimrun weekend in our short lifetime. A total of 600 racers started in both Saturdays sprint and Sundays World Series race. We had a total of 368 teams registered! Utö, in the Stockholm archipelago showed its best side, preparing...

Cold water research project

Together with our very good friends at Norseman we are involved in a cold water research project. At ÖTILLÖ Utö we will monitor a group of teams to see how they are affected by the in and out of cold water. Jörgen Melau, responsible for the project explains it the...

Swimrun betting with Mr Green

ÖTILLÖ was founded on the origin of of a crazy bet between 4 persons. These four, the Original 4 as we call them spent a late alcohol soaked evening challenging each other. What lasted was the bet of being the first pair to the Island of Sandhamn from the Island of...

Michael Lemmel at Thriathlon Show

ÖTILLÖ Race Director Michael Lemmel are one of the speakers at Thriathlon Show in London, February 16-19 2017. Michael will speak February 18, 14.30-15.10 Triathlon Show London is the UK's largest triathlon show and the perfect place to prepare your upcoming triathlon...

Teams for ÖTILLÖ Swimrun World Championship 2017

This is a time of year that we love and hate. We get to read all the fantastic applications for The ÖTILLÖ Swimrun World Championship and we can start ”seeing” the field of racers that will tackle the beast of a course that ÖTILLÖ is. However, selecting teams for the...

Swimrun ID for registration to all ÖTILLÖ races 2017

Over the next couple of days and weeks we will open the registration to the ÖTILLÖ Swimrun World Series 2017. When registering you will be asked for a MANDATORY Swimrun ID to be able to register. We therefore suggest that you do this registration in advance and ask...

New barries chrushed at ÖTILLÖ 2016

What a day! 119 teams on the start line, 110 teams across the finish line. New barriers crushed, first time under 8 hours, first time 100+ teams across the finish line. All classes have new course records and new ÖTILLÖ Swimrun World Champions except Annika Ericsson...

International partners
  • Head
  • Campz Addnature
  • Garmin
  • Vivo Barefoot