Stockholm Archipelago Ultraswimrun Challenge

Arholma - Landsort: The 265 km USR Championship


Take part in the most amazing swimrun adventure there is, in the archipelago were swimrun was born. Conquer the classical route Arholma - Landsort, by swimrunning from the northernmost lighthouse at Arholma, to the most southernly at Landsort. You will experience the entire Stockholm archipelago, while working your way through circa 90 islands and 260 km of off-trail running and open water swimming.


This challenge is not for anyone. The route, which is dynamic, will take the racers through the most heavy technical terrain the archipelago have to offer. The swims are epic but exposed and rough seas can be expected if the weather gets bad.


You will need to have extensive experience in both open water swimming and long-distance running, a strong endurance capacity and the will of few.


The inaugural race took place in the summer of 2016. You can read more about it here.



Race Outline


You compete in teams while navigating your way through some of the 24 000 islands in the Stockholm archipelago. The race follows a suggested route, but the course is dynamic leaving the racers to choose the most optimal for them. The swimmers will cut through, the runners will aim for the easy fast trail.



The race starts early in the morning at point A

The teams will cater for themselves during the day

Support vessels will be available

Standard swimrun rules for gear applies

Teams will carry basic mandatory gear

No trash can be thrown in the nature

Everyone starts togehter

The support vessel will carry water, but no food / energy

The race window is 07:00 - 19:00*

There will be an evening cut at each point B

Each stage will finish at point B

All team members have to finish each stage

Accumulated stage time will be counted

Overall total race time will decide the winner

Breaking any rule = disqualification

A detailed race pm will be sent well in advance


The race is divided into 6* stages.


1: Arholma – Blidö Stämmarsund

2: Blidö Stämmarsund – Möja Långvik

3: Möja Långvik – Runmarö Styrsvik

4: Runmarö Styrsvik – Ornö church

5: Ornö church – Nåttarö south

6: Nåttarö south – Landsort

* . The rules for the last stage is weather dependent and will be finalized during

the race week.


Each team will have a map where ilands forbidden to enter will be clearly marked. Private properties cannot be entered. Each team will be tracked with the mandatory GPS device. Each taken route by the team will be studied in hindsight.


To get ahed in your planning, we suggest the following reading:





All participants must show that they have fully understood our terms of conditions and that this adventure is conducted under ones own personal responsibility. Each participant must have a casualty insurance.




Race course stage goals