Welcome to ÖTILLÖ Swimrun Sprint Final 15K

Experience part of the Final 15 km of the legendary ÖTILLÖ course.

September 4th, 2021

International Partners

Partner - Vivo Barefoot

Partner ARK

Partner - Mr Green

National Partner
Timing Partner
Partner - Crownhealth
Partner - Precision Hydration
Partner - Gococo
Nynäshamns Ångbryggeri
Destination Partners
Utö Värdshus
Stockholm - Capital of Scandinavia
Haninge Kommun

Race description

The ÖTILLÖ Sprint Final 15K is open for anyone. The course covers some of the last and very emotional part of the grueling World Championship course.

A total distance of 12,4 km, with 13 runs and 12 swims. The longest swim is 400 metres and the course has a total of 21% swimming. Some of the swims have side current. The runs are beautiful and tough; some on soft trail, some on cliffs. It feels like a very remote race. This course is magnificent. You have the same finish as the World Championship at Utö Värdshus.

You can race as a team or solo.

Short facts

Date: 2021-09-04
Country: Sweden
Total race distance: 12 400 m
Trail-running: 9 750 m
Run sections: 13
Swimming: 2 650 m
Swim sections: 12
Longest swim: 400 m
Longest run: 3 500 m
Total elevation: 64 m


We will open registration for ÖTILLÖ Swimrun Final 15K 2021 when the Covid-19 situation is more clear.

About ÖTILLÖ Swimrun Sprint Final15K

ÖTILLÖ, The Swimrun World Championship is very difficult to get into and you need to be a very good team to manage the whole course. At the same time many people want to experience part of the original ÖTILLÖ course.

This is the reason behind the very beautiful ÖTILLÖ Swimrun Sprint Final 15K which covers the last and very emotional part of the grueling World Championship course. It starts on the island of Ornö and finishes on the island of Utö. This is a point-to-point race.

This sprint race is not easy but you do not have to go fast. We suggest that you have some previous racing experience.

The course has 13 runs and 12 swims with quite a bit of island-hoping. Some of the swims have side currents. This is without a doubt one of our best Sprint courses.

Read the full Race Directors Report »


Thursday, September 2nd, 2021

23:59 (Local time) Last day to enter and make changes for the ÖTILLÖ Final 15K race. Changes must be sent to support@race.se.

Saturday, September 4th, 2021

07:30-08:00 Race registration ÖTILLÖ Final 15K Start 1
08:30 Start 1 ÖTILLÖ Final 15K Team
11:00-11:30 Race registration ÖTILLÖ Final 15K Start 2
12:00 Start 2 ÖTILLÖ Final 15K Team
14:30-15:00 Race registration ÖTILLÖ Final 15K Start 3
15:30 Start 3 ÖTILLÖ Final 15K Solo
19:30 Chartered ferry to Årsta brygga. Buy your tickets in the reception at Utö Värdshus, there will be room for everyone.

Sunday, August 30th, 2020

07:30-08:00 Race registration ÖTILLÖ Final 15K Start 4
08:30 Start 4 ÖTILLÖ Final 15K Team
11:00-11:30 Race registration ÖTILLÖ Final 15K Start 5
12:00 Start 5 ÖTILLÖ Final 15K Solo
14:30-15:00 Race registration ÖTILLÖ Final 15K Start 6
15:30 Start 6 ÖTILLÖ Final 15K Team & Solo
19:30 Chartered ferry to Årsta brygga. Buy your tickets in the reception at Utö Värdshus, there will be room for everyone.

Race information

Here you will find everything you need to know as a racer at ÖTILLÖ Swimrun Final15K. Please read this thoroughly as the information is important for your experience before and during the race. Good luck and have fun!

Final 15K race specific information
Print as PDF
Travel to Final 15K

The island of Utö is in the Stockholm Archipelago South East of Stockholm. We suggest you fly to Stockholm.
From Stockholm Arlanda Airport you can take the Arlanda Express train to Stockholm City Centre.

From the Stockholm Central Station you can take a subway, bus and ferry to Utö. Use the travel planner in this link and put in Stockholm C as your departing station and Utö Gruvbryggan as your arrival station.

If you arrive by car there is a big parking lot at Årsta Brygga where the ferry to Utö, Gruvbryggan leaves from. Use the travel planner above to check the ferry times from Årsta Brygga.

For those of you racing in the 15:30 start on Saturday and Sunday you need to either stay on Utö the night after the race or take our chartered ferry that leaves at 19:30. Tickets are available for sale at the reception at Utö Värdshus. Please pre book them either by calling the reception at Utö Värdshus +46 8 504 20 300 or by email bokningen@utovardshus.se The cost is 100 sek/ person and there will be enough space for everyone. NOTE: You must have a ticket. No sale on-board.

Accommodation at Final 15K

Utö Värdshus is offering a 10% discount on accommodation at the hotel and the hostel. Booking code is ÖTILLÖ 15K. Book by calling the reception at Utö Värdshus +46 8 504 20 300.

There is also a camping on Utö with an offer per night of 150SEK/ tent. Book by calling the Utö Gästhamn +46 8 504 203 02.

Registration for Final 15K

The registration will be in the harbour at Gruvbryggan at Utö. We have one registration time for each start, it is not possible to collect your start pack at another registration than yours.

Registration for start 1: 07:30-08:00
Registration for start 2: 11:00-11:30
Registration for start 3: 14:30-15:00

Registration for start 4: 07:30-08:00
Registration for start 5: 11:00-11:30
Registration for start 6: 14:30-15:00

All racers have to come to the registration to collect the Start pack. At the registration you will have to display your photo-ID. If you race in a team 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.

Energy stations at Final 15 K

We will have energy and liquid stations along the course as marked in the course map.

  • We will serve fruits and snacks at the energy stations.
  • We will have water and electrolytes by Precision Hydration at all stations.
  • Please do not take more than you need as there are others behind you.
  • We will have paper cups at all energy stations but you are free to use your own collapsible cup as well.
  • Please re-use your cup instead of taking multiple cups.
  • If you need gels, bring your own and carry in your wetsuit. Do not throw the wrappers on the ground, leave it in the garbage cans at the energy stations.
Race briefing for Final 15K

There will not be a race briefing, please read all information on our webpage here and in NEWS.
If you have questions you can ask at registration.

Cut offs for Final 15K

The ÖTILLÖ Final 15K does not have any cut-offs.

Media production for Final 15K

During each race we make a media production for social media and traditional media. You will see photographers, reporters and film teams. If you have any personal media contacts that would like to have material from us please email to pr@otilloswimrun.com

We will cover ÖTILLÖ Sprint Final15K LIVE on otilloswimrun.com/live please spread the information to all your friends and family.
Our images that we post from the race are free to use for you as racers but not allowed for commercial use to promote other products or events. Please use them.

Weather for Final 15K

In the end of August we usually find late Swedish summer weather. But, it can be the start of autumn. Make sure you bring clothes to stay warm. It can be anything between 5 – 20 degrees C.
Water temperatures will be between 16- 18 degrees C depending on where along the course. Make sure you dress with a good wool layer underneath your wetsuit and use a Neoprene cap if you are not used to cold water.
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.

Spectators, friends and families in Final 15K

We welcome all spectators, friends and families to participate in our events.

The course is very easy to follow by bicycle when the teams arrive on Utö North. These are available for rent in the harbour. Make sure to ride safely as you are on open roads, even though they have little traffic.

There is a restaurant right next to the event area. If you want to buy food there is plenty there.

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 World Series events. Book your suit online and pick it up on site at the ARK box. Limited amount of suits per event. If you want you have the option to buy your suit afterwards at a discounted price.
Book your wetsuit here.

Rental sites:

  • ÖTILLÖ Engadin — July 25 – 26, 2020.
  • ÖTILLÖ Final 15K — August 29, 2020.
  • ÖTILLÖ Utö — September 26 – 27, 2020.
  • ÖTILLÖ Hvar — November 7 – 8, 2020.
  • ÖTILLÖ Malta — November 28 – 29, 2020.

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 2020 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. 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.


ÖTILLÖ Swimrun Sprint Final 15K - 2020