Welcome to EX Swimrun
EX Swimrun is a series of swimrun races, safaris and events in Stockholm, Sweden. The events combine open-water swimming and trail running across islands, lakes and archipelago landscapes. Races include EX Edsviken, EX Runmarö and EX Safari Swimrun with distances for everyone from beginners and elite athletes.
For the love of the sport!
Nicholas, Pehr and Elisabet
EX Swimrun
Saturday 29/8
Join the EX EDSVIKEN – three races in one day just outside Stockholm. Suitable for everyone from beginners to elite athletes set in beautiful castle settings.
Experience EX EDSVIKEN Swimrun, a unique race combining swimming and running in the beautiful castle surroundings of Edsbergs Castle and Ulriksdal Castle, just outside Stockholm. Designed for beginners and elite athletes alike, the event offers a full day of challenge, speed, and camaraderie.'
Choose from three distances: EX LONG 24K for a serious challenge with 19 km running and 5 km swimming, EX SHORT 14K for a fast, intense race with 11 km running and 3 km swimming or EX FIVE 5K ideal for first-time Swimrunners with shorter, accessible sections.
After the finish, enjoy the After Swimrun Party with pizza, coffee, and the chance to connect with the Swimrun community. EX EDSVIKEN Swimrun is more than a race—it’s an unforgettable day of sport, nature, and friendship.
In 2026, we are launching the EX Swimrun Runmarö – a unique race in the heart of the Stockholm archipelago early in the season, featuring both warm lakes and crystal-clear sea swims.
Choose between SHORT (approx. 14 km) and LONG (approx. 24 km) and challenge yourself through Runmarö’s spectacular landscapes. The start takes place at the cozy Svängen’s Krog, where both locals and visitors gather for food, drinks, and a great atmosphere before and after the races.
Half the price – twice as warm – three times the love!
Saturday 6/6
Sunday 16/8
We love the adventurous spirit of Safari and offer several different concepts where you, together with others, will experience a challenging and pure form of Swimrun. From a point chase in Northern Stockholm during the Super Safari, to a completely unique experience at the outer edge of the Stockholm Archipelago during the EX Safari Tour or EX Safari Race.
Adventure, community, and experience-based Swimrun!
EX Para-Swimrun with Aron Andersson is a historic race focused on adventure, challenge, and inclusion. In flexible teams of three participants, with one person serving as a support teammate, competitors take on an adapted 5K course around Edsviken.
“I have always believed that adventure has no limits—only the limits we place on ourselves. EX Para-Swimrun is about breaking down those barriers. Swimming and pushing forward side by side in Edsviken, and crossing the finish line together, is an experience that changes your perception of what is possible. This is the beginning of something much bigger!”
– Aron Andersson, adventurer and inspirational speaker
Saturday 29/8
"EX has found a winning concept and will raise the bar and inspire other athletes to join in on the fun."
EDSBÄCKENS IF
Organiser
A non-profit sports club in Sollentuna that organizes swimrun and running races with a focus on experience and community. Edsbäckens IF co-organizes EX Swimrun, Sollentuna Winter Marathons, Runmaröloppen and is a member of Korpen Svenska Motionsförbundet.
Main partner
Swimruncupen Stockholm organises a series of Swimrun competitions from May to September in and around Stockholm. Races for everyone from beginners trying Swimrun for the first time to experienced Swimrunners looking for perfect training session. Swimruncupen is also a forum for like minded to meet and share experiences.
Swimruncupen is run by Elisabet Pärsdotter Westman who has podium finishes in f.ex. Ö-till-Ö WC, Ö-till-Ö Scilly, Ö-till-Ö Utö, Ångaloppet, RockMan, LED etc.
Read more on Swimruncupen.se
Main partner
Challengize is a partner and platform for proactive and inspiring digital health Challenges. A modern and global alternative to the traditional step challenge.
We also organise several other unique experience races like Sollentuna Summer Winter Marathon, RUNmaröloppen and SMIR (Stockholm Multi Island Run).
Challengize is developed by Nicholas Roman, an avid race organizer with a passion for Swimrun safari but also has merits from Ö-till-Ö WC, RockMan, Koster Swimrun, Amafibiemannen etc.
Read more about Challengize on go.challengize.com
Main partners
Sponsors & friends
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