ötillö Swimrun World Championship

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September 6th, 2021, 15th anniversary

ÖTILLÖ is the jewel in the crown. It is the mother of all swimruns and the origin of the sport.
ÖTILLÖ is considered to be one of the most prestigeous endurance races in the world.

Welcome to ÖTILLÖ, The Swimrun
World Championship

Welcome to ÖTILLÖ, The Swimrun World Championship

September 6th, 2021, 15th anniversary

ÖTILLÖ is the jewel in the crown. It is the mother of all swimruns and the origin of the sport. ÖTILLÖ is considered to be one of the most prestigeous endurance races in the world.

International Partners

Partner - Vivo Barefoot

Partner ARK

National Partner
Logo Neolar
Timing Partner
Partner - Precision Hydration
Partner - Gococo
Destination Partners
Utö Värdshus
Stockholm - Capital of Scandinavia
Haninge Kommun

Race description

ÖTILLÖ, The Swimrun World Championship is the jewel in the crown. It is the mother of all swimruns and the origin of the sport. ÖTILLÖ, The Swimrun World Championship is considered to be one of the most prestigious endurance races in the world.

Short facts

Date: 2021-09-06
Country: Sweden
Total race distance: 74 680 m
Trail-running: 65 135 m
Run sections: 24
Swimming: 9 545 m
Swim sections: 23
Longest swim: 1 750 m
Longest run: 19 700 m

About ÖTILLÖ, The Swimrun World Championship

ÖTILLÖ is the original swimrun race, it is The Swimrun World Championship. To finish the ÖTILLÖ course from dawn to dusk, the competitors must be very fit and they must be very fast in and out of the water as there are 46 transitions. The teams swim between the 24 islands and run over them. The total distance is 75 kilometres of which 10 km are open-water swimming and 65 km are trail-running.

The start at Sandhamn is mythical and the finish at Utö Värdshus on Utö is like coming to Nirvana. There are spectator spots and food stations at some well-known restaurants on the islands along the way. There are safety boats, medical staff and race marshalls on the course to try to guarantee everyones safety.

The Baltic is the life lung of the Stockholm Archipelago, we work with environmental groups to create awareness about the need for a clean Baltic.

Read the full Race Directors Report »

Schedule for the weekend

Wednesday, September 1st, 2021

23:59 (Local time) Last day to make changes for the ÖTILLÖ World Championship race. Changes must be sent to johanna@otilloswimrun.com

Sunday, September 5th, 2021

14:00 Buses leave Stockholm Cityterminalen
15:00 Buses arrive Djurönäset
15:00 Hotel check-in opens
15:00-16:30 Race registration
17:00 MANDATORY Race meeting in the big, conference room to the left of the reception – Djurönäset
18:00-19:15 Dinner teams 70 - 82, 201 - 250, 301 - 326
19:15-21:00 Dinner Teams: all others

Monday, September 6th, 2021 – Race day

03:45 Breakfast opens
04:30 Start loading ferries
04:45 Ferry leaves from Djurönäset to the Start at Sandhamn - bring all your belongings
05:30 Bags on ferry at Sandhamn
05:40 Racers ready at start line
05:50-06:10 Start
13:40 First teams across the finish line
15:30-23:00 Post race banquet at Utö Värdshus
13:40 Last teams across the finish line
20:00 Prize giving
21:30 Monday Night ferry and bus to Stockholm City

Tuesday, September 7th, 2021

06:30 Breakfast at Utö Värdshus
08:30 Ferry leaves from Utö Gruvbryggan
11:45 Ferry arrives at Strömkajen, Stockholm City

Race information

Here you will find everything you need to know as a racer at ÖTILLÖ, The Swimrun World Championship. Please read this throughly as the information is important for your experience before and during the race. Good luck and have fun!

World Championship race specific information
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Start lists for ÖTILLÖ, The Swimrun World Championship

Here you will find the start lists for ÖTILLÖ, The Swimrun World Championship 2021.

Travel to ÖTILLÖ, The Swimrun World Championship

ÖTILLÖ, The Swimrun World Championship is between the island of Sandhamn and the island of Utö in the Stockholm archipelago. We suggest you fly to Stockholm.

Travel to the start hotel

On September 5th we have chartered buses to take you to Djurönäset where all teams register and sleep the night before the race.
The buses leave at 14:00 CET from the Stockholm Central bus station Cityterminalen. In the bus station you will find ÖTILLÖ on the departure board to be able to find the berth that they leave from and you will see ÖTILLÖ staff wearing staff vests.
The buses are only for racers and for those who have bought Spectator packages.
Make sure that you are on time. The buses can be loaded from 13:45 and will not wait.

Return to Stockholm

There are two different chartered ferries to return with; Monday evening at 21:30 to Årsta Brygga or Tuesday morning at 08:30 with a ferry straight to Stockholm City (Strömkajen), arrival at no later than 11:45.

Monday night ferry

On Monday after the race we will have a ferry leaving Utö at 21:30 to Årsta Brygga. It will connect with a bus to Stockholm Central Station. If you have a morning flight or want to get back to the mainland on Monday evening this will be your only option to make it.
The Monday night ferry is free for you as a racer but must be booked before- hand. See more info and book this under Chartered ferries below.

Accommodation at ÖTILLÖ, The Swimrun World Championship

In your race fee the accommodation is included for the start hotel, Sunday night at Djurönäset and the finish hotel at Utö. Two dinners and two breakfasts are also included. When you arrive at Djurönäset you can get your room key in the reception. They will only know your team number so make sure you know what number you have from the start list.

At Djurönäset you stay in a very nice hotel room. At Utö you have a bed in varied types of accommodation.

Registration at ÖTILLÖ, The Swimrun World Championship

The registration will be at Djurönäset on Sunday, September 5th 15:00-16:30. There will be signs to guide you when you arrive.

All racers have to come to the registration to collect the Start pack. At the registration you will have to display your photo-ID. Both team members need to come to the registration together. For a smoother process, please look up your start number before picking up your Start pack. If you plan to race with fins you need to bring these so that we can verify that they are in line with the rules.

Race briefing at ÖTILLÖ, The Swimrun World Championship

The race briefing is mandatory for all racers. It is at 5 pm in the Congress Hall next to the reception at Djurönäset. Make sure you are there a couple of minutes ahead as we will start at 5 pm sharp.

At the race briefing you will get your time slot for having dinner, info about the morning ferry and about breakfast.

Cut offs ÖTILLÖ, The Swimrun World championship

ÖTILLÖ, The Swimrun World Championship has five (5) cut offs:

  • Time 4 at 09:00
  • Time 8 at 11:15
  • Time 11 at 14:00
  • Time 13 at 15:30
  • Time 15 at 18:00

These are for your safety and for the safety of the organisation. Please respect these and our staff if you get taken off. You will not finish before dark unless you manage the times.

Media production ÖTILLÖ, The Swimrun World Championship

We will be producing a massive LIVE WEBCAST from 05:45 – 18:00 during the race which your friends and family can follow on facebook and/ or youtube.

We will also have a LIVE page where you can follow a leaderboard and all our social media plattforms funneled to one place. Please make sure you share these plattforms with your friends and family.

Please also use and follow the hashtag #otillo so you can find everything that is being posted in twitter and instagram.

If you have any newspapers, magazines or media contacts that want to write about your race please contact Josefine as she is coordinating all PR with text, images and news cuts.

After the race you will find images of your racing that you are free to share on our flickr page and you will find the Official video one week after the race on our Youtube and facebook page.

If you want to share your training and race data we would love to look at it on our Strava.

Weather ÖTILLÖ, The Swimrun World Championship

As you realize we cannot predict weather. Over the last two years we have had both extremes. Prepare for the worst and hope for the best.

If you want to check the weather conditions in real time you can find the info here. Note: the Utö water temperature will be similar to the Sandhamn water temperature.

Like everywhere we can have wind, rain and un-seasonably cold. Make sure you bring clothes to handle this.

Salt water. The water in the Baltic has very low salinity. Some teams will even race without swim goggles.

Spectator package at ÖTILLÖ, The Swimrun World Championship

Spectator package for ÖTILLÖ, The Swimrun World Championship 2021 is now available.

The Spectator package is the only way that you will be able to take part of a majority of what the participants go through during the race. The cost is 7 500 SEK/person and below is what is included. Buy your package here up until August 22nd. We have a limited number of spots available.

Sunday, September 5th

  • 2 pm bus from Stockholm City to Hotel Djurönäset, racer hotel
  • Upon arrival you will be able to take part in the whole racer check-in experience and see the race briefing at 5 pm
  • Dinner and hotel accommodation (twin room occupancy) at Hotel Djurönäset

Monday, September 6th

  • Early breakfast and boat transport to the start together with the racers
  • Watch the start at Sandhamn
  • Ferry transport along the course to see part of the race
  • Lunch on the ferry
  • Drop off on the island of Utö at 1 pm to see all the teams finish
  • Dinner together with the racers at Utö Värdshus
  • Dormitory- style accommodation
  • Optional ferry & bus transport to Stockholm C

Tuesday, September 7th

  • Breakfast at Utö Värdshus
  • Ferry transport with the racers to the City of Stockholm


NOTE: you may not assist any teams unless if it is a medical emergency. Any other assistance will result in disqualification of the team.

Chartered ferries

There are two different chartered ferries to return to Stockholm with. One is on Monday evening at 21:30 from Utö, to a waiting bus at Årsta Brygga, which will take you to Stockholm City Terminal with an arrival time at about 23:30 on Monday night.
The second is on Tuesday morning at 08:30 from Utö with an arrival in Stockholm City at no later than 11:45. We suggest that you do not book your return flight for earlier than Tuesday late afternoon. If you have an earlier flight you should take the Monday night ferry.

The Monday night ferry needs to be booked no later than September 1st to be guaranteed a spot. Please book the Monday night ferry here.

The Tuesday morning ferry does not need to be booked.

ÖtillÖ general race information
Covid-19 update
COVID-19 UPDATE July 9, 2020

Read the latest Covid-19 news here »


Race rules

Each athlete participating in an ÖTILLÖ Swimrun (World Series, Sprint & Experience race) must know, understand and follow all the competition rules. Please read the ÖTILLÖ Standard Swimrun rules.

Safety measures
  • Take care of each other; it is a long and tough course.
  • We have safety boats and are trying to do our best to cover the course.
  • All teams have to help another team in an emergency.
  • We have medics on the course.
  • Communicate with race officials when help needed.
  • If you abandon the race you must communicate with race officials as soon as possible and return the timing chip at the finish area.
  • You cannot wear a tow rope for the first run.
  • We suggest that you do NOT use a tow rope when running in difficult terrain.
Cups at ÖTILLÖ Races

As stated in the ÖTILLÖ COVID- 19 SAFETY MANAGEMENT PLAN 2020 we will now have disposable paper cups at all energy stations. Please re-use your cup instead of taking multiple cups. The foldable cup is therefore not included in the mandatory equipment.

Race course

Race course

If the race organization believe there is a danger for the racers or the organization based on weather or other conditions, the course can be changed the day before or even in the middle of the race. Safety is our priority.

Rental wetsuits

”Try before you buy”.

Now you have the possibility to rent the Worlds fastest swimrun suits at all ÖTILLÖ Swimrun events. Book your suit online and pick it up on site at the ARK box.
Book your wetsuit here.


You must have a valid personal insurance for racing in Swimrun. If you do not have one you can purchase it for the race or for the whole season, valid in all the races listed. It is an insurance that will repay your entry fee and travel costs if you have to withdraw prior to the race due to an accident or illness (you have to have a doctor’s certificate).
Read more and buy your insurance here.

ÖTILLÖ Qualification

A spot will be awarded to the first two men, women and mixed teams where no team member already has a spot for the following ÖTILLÖ, The Swimrun World Championship. On ÖTILLÖ Utö, Engadin and Gothenburg we will have three qualifier spots per category.
If a team does not want the spot it will roll down to the next eligible team. If no team wants the spot it goes back to the ÖTILLÖ organisation who are free to do what they want with it. The entry fee needs to be payed at the date set in the invoice.

Swimrun ranking

All teams that finish an ÖTILLÖ World Series race or a race with ÖTILLÖ merit status will receive ranking points, see all merit races here. Check out the races, finish it and get points. If you are not registered, read more about the Swimrun ranking and register here.

To be able to participate in ÖTILLÖ The Swimrun World Championship through ranking selection or random team selection, you need to have ranking points. Read more about how to gain your spot for ÖTILLÖ The Swimrun World Championship here.

ÖTILLÖ Swimrun World Series

Teams that finish top 30 in each category (Women/Men/Mixed) will collect points in the ÖTILLÖ Swimrun World Series. Your team can collect points from all ÖTILLÖ World Series events and ÖTILLÖ, The Swimrun World Championship.

The winning team in each category will be honored at the last World Series event of the year.

Check out the World Series standings and the new point distribution here.

ÖTILLÖ Merchandise

As you might know we have some ÖTILLÖ branded goods. These can be found on our website

Our partners will be in the event area at the finish line with products on-site.

Swimrun rescue

As a swimrunner you are responsible for your team mate and for others around you. It is your obligation to know how to rescue someone out of the water, how to do CPR and how to use your Mandatory pressure bandage if someone has a bad cut. Here are some good films for you to watch.


Swimming induced pulmonary oedema (SIPE) is a condition which has gained attention in recent years. In short, due to somewhat unclear mechanism, fluid collects in the lungs, compromising the transfer of oxygen from the lungs to the bloodstream. This results in the following symptoms;

  • Shortness of breath
  • Decreased oxygen saturation (which has to be measured with medical instruments)
  • Cough, sometimes with blood

There is ongoing research in the subject, and as the knowledge increases, we will hopefully learn how to better prevent, diagnose and treat the condition.

The current research suggests that the condition terminates in less than 48h. Often it’s enough to stop the activity, remove/open up the wetsuit and get warm. In some cases, oxygen therapy is needed. It’s not fully understood why the condition arises.

There are yet no studies evaluating the long-term effects of SIPE. There is evidence that susceptible individuals may have recurrent episodes of SIPE. There are some medications that may help to prevent recurrent episodes.

If you experience the above symptoms, we recommend stopping the activity and contacting race marshals. If you encounter symptoms during a training session, we recommend seeking medical attention since there are other medical conditions which can manifest in the same way.

Train smart, race hard and take care of yourself and your partner!

Force Majeure

Neither the participant nor the race organizer shall be held responsible for a force majeure event. Force majeure means any event which is unforeseen and beyond the reasonable control of either party including but not limited to the following: Act of God, adverse weather, inevitable accident, failure or shortage of power supplies, fire, flood, epidemic, earthquake, explosion, lightning, war or armed conflict, embargo, government or regulatory action or decree, riot or civil disturbance, strike, lock-outs, or other industrial action, terrorist action, failure or delay of common carrier or impairment or lack of adequate transportation facilities.

If by reason of any force majeure event the race organizer is delayed in, or prevented from, performing any of the obligations with regards to staging the race, no loss or damage shall be claimed by the participant by reason thereof.

Images & Video

ÖTILLÖ - Swimrun World Championship 2019