Here you will find necessary information about the race - will be updated continously.


WINTER BAY Backyard Ultra is organized by Run Raisers (from Sweden), who also have been organizing KRKA Ultra Challenge in Croatia 2018-2019 (the 2021 edition will probably take place Spring 2021). All our races have a charity connection where we try to raise awareness & money against one of the fastest growing diseases globally - diabetes! #Run4Diabetes


The race follow a 6.7 km rounded course (loop) with a new start every full hour. WINTER BAY Backyard Ultra will start kl. 10:00 & all participants who finish the loop within 1 hour can start the next loop at kl. 11:00, then kl. 12:00 etc. Participants who don't manage to finish the loop under 1 hour are out of the race.

All participants run as many loops they want & participation is at your own risk.


Registration to WINTER BAY Backyard Ultra 2021 will open May 1 for everyone. Already registered participants for the cancelled 2020 edition will automatically be transferred to 2021.

  • 250 spots will be available for the main event. We might have an optional additional 50 spots to be released later.
  • 100 spots will be available for the Kids 'n' Family event.


Name change can be made until April 15, 2021 at the cost of 150 SEK (0 SEK for registered participants for the cancelled 2020 edition).

This is the process: The original participant sends an email to giving his/hers permission for the name change. We also need the following details of the new participant: Full Name, Email, Mobile, Sex, Personal number (6 digits), Club/Team, T-shirt Size.


According to The Distance Contracts Act sports events are exempt from the right of withdrawal.

You can read more here (Lag (2005:59) om distansavtal och avtal utanför affärslokaler) här
You can also read a short version here Hallå konsument!


Saturday May 1 – 2021 at Trekantsparken, Stockholm (T-bana Liljeholmen). Start kl 10:00.


Joint start every full hour. First start kl. 10:00, then kl. 11:00, kl. 12:00 etc.


Last One Standing, only one class.


You pick up your Start Bib ONLY according to the following:

Friday April 30:             

Runners' Store (Regeringsgatan 26, Stockholm) between kl. 11:00-16:00

Saturday May 1:       

Big tent in loop area @ Trekantsparken between kl. 08:00-09:00


Participant T-shirt* will be in included included in the Goodie Bag* given at Start Bib pick-up.

*T-shirt & Goodie Bag are not included for Kids 'n' Family participants.


We can offer our participants a special discount in our "Running Crib" = Best Western and hotel (Apelbergsgatan 40, T-bana Hötorget) just 15 min away with T-bana to start. Please see more info here: Accomodation


Show on Google Maps
Trekantsparken, Stockholm (T-bana Liljeholmen).


Start & finish area in Trekantsparken. Here there is a limited area where participants can set up camp with a small tent, sun chairs or similar - a place to relax between every loop. In addition there will also be a bigger tent at disposal for the participants. In the loop area there will of course also be a loaded water-/energy station open at all times during the event. 5 toilets will be ready. Showers & changing rooms are located at our official "Running Crib" = & and Hotel (Apelbergsgatan 40) just 15 min away with T-bana to Hötorget.


The course is a 6.7 km rounded course (loop). The surface varies between ashpalt, wood, gravel/macadam.


No official parking available, limited number of parking spaces close to event aree. Park at own risk & follow stated parking fees. We recommend publick transportation


Every participant who finish at least one full within 1 h will be awarded a unique medal.

Last One Standing (the winner) will be awarded a unique trophy.

We will have a raffle where participants can win nice prizes on their Start Bib numbers from our sponsors/partners.


Medals will be given to participants after they notify Race Management of their resignation from the race.

Prize to Last One Standing (the winner) will awarded after race finish.

Winners of the raffle will be posted in loop area during Saturday May 2. Prizes are collected in the main tent.


Head lamp, reusable cup/mug & personal medication are mandatory equipment. Head lamp must be used between kl. 19:59-04:30. Reusable cup/mug must be accessible in loop area. Personal medication must be stuffed in loop area in case of emergency.

Reflex and/or reflex vest, extra shoes & socks, blister/chafing prevention & extra clothes are recommended equipment. The weather in Stockholm in May may vary a lot day by day - dress for success.


In our ambition to save the environment, we will not use any disposable mugs during the event. Meaning all participants must have their own resusable cup/mug to enjoy our refreshments in the water-/energy station.


No individual time tracking, we will only count the number of loops / participant. Since we will have manual checking & counting at finish we kindly ask for your understanding it might be a bit crowded at the finish the first loops. We will have many volunteers to ensure a smooth finish transition. Please keep your Start Bib visible at all times & make sure you are checked when finishing each loop.


During the event we will do our best to update the results on Facebook on a regular basis, for your loved ones to follow all your admirable efforts. After race finish we will post all results on both Facebook and the Run Raisers website.


3 toilets + 1 urinoar will be available in the loop area.

Changing rooms are not avilable in the loop area, use existing tents if necessary.

Showers & changing rooms are availble in our "Running Crib" = Best Western and hotel (Apelbergsgatan 40) just 15 min away with T-bana to Hötorget.


More info to come, but rest assured, there will be a lots of energy...


Pacers are not allowed, see Rules

Contact Us

Improfiler AB (Run Raisers)

Orgnr:     556899-6036

Phone:    +46 72 150 8750


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Facebook:     Run Raisers

Instagram:    @run_raisers

YouTube:      Run Raisers

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