Welcome to ÖTILLÖ Sprint Final 15K

Experience the best that Utö and part of Stockholm Archipelago has to offer.

September 2nd, 2023

ÖTILLÖ Sprint Final15K is a swimrunners dream. The racecourse makes the best of what Utö and the Stockholm Archipelago has to offer. You will do some short sections of the legendary ÖTILLÖ, The Swimrun World Championship course. Technical trail running, beautiful views, forests, cliffs and lots of swims. This is a challenging and intense racecourse that will make you smile all the way to the end.

Event Partners
Partner - Vivo Barefoot
Partner ARK
Partner Logo Dryrobe
Destination Partners
Stockholm - Capital of Scandinavia
Utö Värdshus

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 12,1 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: 2023-09-02
Country: Sweden
Total race distance: 12 100 m
Trail-running: 9 500 m
Run sections: 13
Swimming: 2 600 m
Swim sections: 12
Longest swim: 400 m
Longest run: 3 500 m
Total elevation: 52 m


Early bird fee
– Team 1 300 SEK / Solo 700 SEK
From Sep 22, 2022

Normal fee
– Team 1 500 SEK / Solo 800 SEK
From Oct 22, 2022

Late fee
– Team 1 750 SEK / Solo 900 SEK
From Jul 2, 2023

Last minute fee
– Team 1 900 SEK / Solo 1 000 SEK
From Aug 24, 2023


Sign up today

About ÖTILLÖ 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 was the reason behind the very beautiful ÖTILLÖ Sprint Final 15K which covers some of the last and very emotional part of the grueling World Championship course. Since then it has developed to be one of our best designed courses.

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, August 31st, 2023

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

Saturday, September 2nd, 2023

09:20 Ferry to Utö Gruvbryggan leaves from Årsta Brygga, arrival 10:00
10:00-11:30 Race bib distribution ÖTILLÖ Final 15K Team & Solo
10:00-11:45 ÖTILLÖ Merchandise sales open at Utö Gruvbryggan
10:20 Ferry to Utö Gruvbryggan leaves from Årsta Brygga, arrival 11:15
12:00 Start ÖTILLÖ Final 15K Team & Solo
13:30 First Sprint Team/Solo across the finish line
14:30 Race cut-off at Time 5 Utö Norra
14:50 Prize giving ÖTILLÖ Final 15 Team & Solo
15:35 Ferry to Årsta Brygga leaves from Utö Gruvbryggan
16:50 Ferry to Årsta Brygga leaves from Utö Gruvbryggan

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 Sprint 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
Race area at Final 15

Race area
The race area is at Utö Gruvbryggan. The start is in the harbour of Utö Gruvbryggan and the finish line is by Utö Värdshus.

Changing rooms, toilets and showers
There are changing rooms, showers and toilets in the harbour.

Bag drop
You can leave your bags in “Cykelboden” in the harbour. Just South of the start line. The bag drop is not guarded.

All racers will receive a simple meal after the race.
On Utö there are several restaurant options.

Prize giving
The prize givings will be done in the race tent by Utö Värdshus according to the schedule.

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.

Accommodation at Final 15K

Accommodation on Utö
Book your accommodation with Utö Värdshus, they have all types of living solutions for you. The beds will run out so we recommend you to make your booking as soon as possible.

There is also a camping area less than 1 km from the start.

Race bib distribution for Final 15K

The race bib distribution for ÖTILLÖ Final 15K Sprint Team & Solo will be in the harbour at Utö Gruvbryggan between 10:00 and 11:30.

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 and in the Times & Distance document.

  • We will serve fruits and snacks at the energy stations.
  • We will serve water and Sports drink from Maurten and if cold weather we will also provide warm liquid.
  • We do not have paper cups at the energy stations, use your collapsible cup or soft flask to drink from.
  • 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.

Energy Schedule

We will serve water and Sports drink from Maurten at all stations. Below you can find the other food and drinks that will be served at each station.

  • Time 3, Utö Norra – Bananas, crisps, homemade chocolate balls from Utö Värdshus, kexchoklad, warm water, Maurten Drink Mix 160
  • Time 5, Utö Norra – Bananas, crisps, homemade chocolate balls from Utö Värdshus, kexchoklad, warm water, Maurten Drink Mix 160
  • Finish line, Utö Värdshus – Homemade pizza from Utö Värdshus
Race briefing for Final 15K

During the 2022 season we have a general online briefing for all races.
You can find the race briefing here.

15 minutes before each start there will be a short race specific update at the start line.

At registration at each destination one of the Race Directors will be present to answer questions.

Cut offs for Final 15K

The ÖTILLÖ Final 15K has one (1) cut-off. This is for your safety:

  • TIME 5 at Norra Utö 14:30

We have cut-offs in our events to make sure that we can have a safe race, these are put in place so that everyone has a possibility to finish before dark and without jeopardizing the safety of others by stretching the safety organization too much. Please respect this and the people enforcing them.

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 and 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.

ÖtillÖ general race information
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.

Mandatory equipment
We have mandatory equipment in our events for your safety, this applies to all race distances.
You can buy whistles, first-aid kits, foldable cups and soft flasks in the ÖTILLÖ Merchandise tent.
Please see the list of mandatory equipment below, this can also be found in the ÖTILLÖ Standard Swimrun rules.
3.1.1 All athletes need to bring all their equipment from start to finish.
3.1.2 Before start we will randomly select teams and solo racers for a check of the mandatory equipment. If the athletes are missing any of the equipment required, they will not be allowed to start.

3.2.1 1 first aid pressure bandage, packed waterproof
3.2.2 2 wetsuits (legs and torso in one piece), 1 per person, suitable for the current water temperature. If the water temperature is above 19 degrees Celsius you can choose to not race in a wetsuit
3.2.3 2 whistles, 1 per person, easily accessible so you are able to use it during the swims
3.2.4 2 foldable cups/soft flasks or similar (not your swim cap) to drink from at the energy stations.


3.3.1 1 first aid pressure bandage, packed waterproof
3.3.2 1 wetsuit (legs and torso in one piece), suitable for the current water temperatures. If the water temperature is above 19 degrees Celsius you can choose to not race in a wetsuit
3.3.3 1 whistle, easily accessible so you are able to use it during the swims
3.3.4 1 foldable cup/soft flask or similar (not your swim cap) to drink from at the energy stations.


3.4.1 A race bib that must be worn visible all the time during the race
3.4.2 A timing chip (lost or not returned timing chip will be charged 100 Euros or equivalent)
3.4.3 A swim cap that must be worn on the head during all the swims
3.4.4 At some of the races, a GPS tracker must be carried by the racers of the World Series category (Solo: 1 per person, Team: 1 per team)

Timing chip and race bib

Timing chip

We use a timing chip that you attach around your ankle with a velcro strap, you will receive the velcro strap in your registration bag. When you pass the timing checkpoints along the course your time will be registered. We will have up to 10 checkpoints along the course and will be reporting your times live on the website.

  • You need to enter the start box from behind to activate your chip. Non activated chip will result in disqualification.
  • After the race you need to return the timing chip at the finish line. Non-returned chip will be charged 100 €.

Race bib

  • The race bibs cannot be modified in any way.
  • Your race bib must be worn visible at all times.
  • After the race you need to return your race bib at the finish line.
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 racers have to help another racer in an emergency.
  • We have several medic teams 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.
  • We suggest that you do not use a tow rope when running in difficult terrain.
Cups at ÖTILLÖ Races

To minimize waste we will no longer supply cups at the energy stations. You need to bring your own collapsible cup or soft flask that we will fill. One cup or soft flask per person is included in the mandatory equipment.

We will have cups and soft flasks to sell at the events if you do not have one with you.

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.

ÖTILLÖ Qualification

At all the ÖTILLÖ World Series events from the latest World Championship to the next there are nine (9) direct qualification spots available, 63 in total. These direct qualification spots are only given to teams where no racer in the team already has a spot.

If a spot is declined it rolls down to the next team. You do not have to be at the award ceremony and you do not have to pay on-site to get your spot. The direct qualification spots are distributed to 4 men, 3 mixed and 2 women teams at each event. This is based on the historical amount of teams per category to make the probability rate as equal as possible.

Read more about qualifying to ÖTILLÖ, The Swimrun World Championship here.

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, you need to have ranking points. Read more about how to gain your spot for ÖTILLÖ, The Swimrun World Championship 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 Sprint Final 15K 2021 - On course