Nizhniy Novgorod, Nizhny Novgorod Oblast, Russia

11th - 13th July 2025

Blaker, Lillestrøm, Viken, Norway

11th - 13th July 2025

Ikaalinen, Luoteis-Pirkanmaa, Pirkanmaa, Finland

17th - 20th July 2025

Kansas, United States

18th - 20th July 2025

Stockholm County, Stockholm, Sweden

18th - 20th July 2025

Ajka, Veszprém, Hungary

18th - 20th July 2025

Tuchola, Powiat tucholski, Kujawsko-Pomorskie, Poland

24th - 27th July 2025

Barakaldo, Bizkaia, Basque Country, Spain

24th - 27th July 2025

Bremen, Germany

25th - 27th July 2025

Tantonville, Meurthe et Moselle, Grand Est, France

26th - 27th July 2025

Gdańsk, Pomerania, Poland

31st July - 3rd August 2025

Helsinki, Uusimaa, Finland

31st July - 3rd August 2025

Teckomatorp, Svalövs Kommun, Skåne, Sweden

1st - 3rd August 2025

Köln-Kalk, Regierungsbezirk Köln, North Rhine-Westphalia, Germany

15th - 17th August 2025

Województwo Łódzkie, Poland

21st - 24th August 2025

Sankt-Peterburg, St.-Petersburg, Russia

23rd - 24th August 2025

Hämeenlinna, Kanta-Häme, Finland

29th - 31st August 2025

Ljusdals Kommun, Gävleborg, Sweden

29th - 31st August 2025

Vreden, Regierungsbezirk Münster, North Rhine-Westphalia, Germany

5th - 7th September 2025

Riihimäki, Kanta-Häme, Finland

13th September 2025

Karlskrona Kommun, Blekinge, Sweden

19th - 21st September 2025

Marzahn, Berlin, Germany

3rd - 5th October 2025

Århus, Aarhus Kommune, Central Jutland, Denmark

17th - 19th October 2025

Buenos Aires, Argentina

18th October 2025

Gavray-sur-Sienne, Manche, Normandy, France

30th October - 2nd November 2025

Pittsburgh, Allegheny County, Pennsylvania, United States

31st October - 1st November 2025

Emmering, Upper Bavaria, Bavaria, Germany

7th - 9th November 2025

Plauen, Saxony, Germany

14th - 16th November 2025

Gdańsk, Pomerania, Poland

20th - 23rd November 2025

Göteborg, Göteborgs stad, Västra Götaland, Sweden

28th - 30th November 2025

Online competition

29th November 2025

Almada, District of Setúbal, Portugal

6th - 7th December 2025

Tokyo Prefecture, Tokyo, Japan

13th - 14th December 2025

Online competition

16th - 17th December 2025

Licheń Stary, Konin County, Greater Poland, Poland

3rd - 6th January 2026

Leuven, Provincie Vlaams-Brabant, Flanders, Belgium

9th - 10th January 2026

Online competition

12th January - 7th February 2026

Steinhausen, Zug, Switzerland

27th February - 1st March 2026

Langeskov, Kerteminde Kommune, South Denmark, Denmark

6th - 8th March 2026

Trnava, Trnavský kraj, Slovakia

13th - 15th March 2026

Lahti, Paijat-Hame, Finland

3rd - 6th April 2026

Buxton, Derbyshire, England, United Kingdom

8th - 11th May 2026

Sweden

June 2026

Espoo, Helsinki, Uusimaa, Finland

5th - 7th June 2026

Gemeente Someren, North Brabant, Netherlands

5th - 7th June 2026

Blaker, Lillestrøm, Viken, Norway

10th - 12th July 2026

Netherlands

18th - 19th December 2032

Opalenica, Powiat nowotomyski, Greater Poland, Poland

27th - 29th December 2047

Gdańsk, Pomerania, Poland

12th - 14th August 2072

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