C1 14th - 18th October 2019: Leiden, The Netherlands

C2  27th - 31st 2020 January: Sliac, Slovakia

C3  11th - 15th October 2021: Moimenta da Beira, Portugal

C4  16th - 20th May 2022: Banagher, Ireland

C5  14th - 18th March 2022: Czeladz, Poland

C6  4th - 8th July 2022: Izmir, Turkey