12-13 October WRE Bukowa Cup, Poland. PreO + TempO
29 Nov.- 2 Dec.   First Asian TrailO Championships, Hong Kong (PreO + TempO Q & F + Relay)
21-22 March   BTOC, near Liphook, SE England
21-22 March WRE, ECTO Hungary
10 April   JK TempO, Stockton
11 April   JK PreO, Snainton Forest, near Whitby, N.Yorkshire
24-26 April WRE, ECTO Falco Cup, Lithuania
21-24 May   European TrailO Championships, Finland
19-25 July   O-Ringen TrailO, Uppsala, Sweden
14-16 August WRE Bukowa Cup, Szczecin, Poland  TempO + PreO
19-20 September   Nordic Match, Løten, Norway
10-11 October WRE, ECTO Italy
7-8 November WRE, ECTO Slovakia
28 Nov. - 5 Dec.   World TrailO Championships, Hong Kong
20-24 July   World TrailO Championships, Poland

WRE = IOF World Ranking Event

ECTO = European Cup in TrailO

The following events usually have one or more TrailO competitions along with FootO competitions:

Portugal O-meet, February (PreO)

Lipica Open, Slovenia (PreO)

JK, Easter weekend (TempO + PreO)

British Orienteering Championships and British TrailO Championships (PreO) on the same weekend, same venue

Wawel Cup, Poland, July (PreO)

Swedish O-Ringen, July (5 x PreO)

Scottish 6-Days, July-August (PreO)

Hungaria Cup, August (4 x PreO)

Cerkno Cup, Slovenia, August (PreO)

White Rose Weekend, August (PreO)