2 August Scottish 6-Days TrailO, Cambus o'May (on S6D 'rest day'). Information here
27 August TrailO at White Rose Weekend. Information on www.whiteroseweekend.org.uk
23-24 September 4th ECTO event, Uppsala, Sweden. Information here and here
29 Sept. - 1 Oct. Nordic TrailO Match, Nokia, near Tampere, Finland
28-29 October 5th ECTO event, Slovakia. Preliminary information here
   
2018  
27 April - 1 May European TrailO Championships, Bratislava, Slovakia. Bulletin 1 here
4-11 August World TrailO Championships, Latvia. Bulletin 1 here
   
2019  
23-29 June World TrailO Championships, Idanha-a-Nova, Portugal. Bulletin 1 here
   
2020  
? World TrailO Championships, Hong Kong