| 2018 | ||
| 26-31 December | Gran Canaria O-meeting, includes 1 day of TrailO. Information here | |
| 2019 | ||
| 27 Feb - 5 March | ? TrailO at Portugal O Meeting (no details yet) | |
| 16-17 March | ECTO+WRE | Lipica TrailO, Slovenia. TempO + PreO. Information here |
| 19-20 April | ECTO | JK, Farnborough area. TempO + PreO. Information here |
| 4-5 May | WRE | FinTrailO, Porvoo/Tampere, Finland. TempO + 2 x PreO. Information here |
| 22-23 June | ECTO | Panamacor, Portugal (pre-WTOC). TempO + PreO. Information here |
| 23-29 June | World TrailO Championships, Idanha-a-Nova, Portugal. Website and Bulletin 2 here | |
| 28-30 June | Kapa, Latvia, 3-day FootO and 2 x PreO + TempO. Information here | |
| 15-18 July | WRE | FIN5 2019, incl. 3 x PreO + 2 x TempO competitions. Can do both FootO & TrailO. Info here |
| 24, 25 or 26 Aug. | British TrailO Championships, Scarborough (linked with White Rose w/e) | |
| 14-15 September | ECTO+WRE | Polish TrailO Championships. TempO + PreO |
| 5-6 October | ECTO+WRE | Nordic Match, Landvetter, close to Gøteborg airport, Sweden. Night PreO + 2 x PreO |
| 12-13 October | WRE | Bukowa Cup, Poland. PreO + TempO |
| Nov-Dec | First Asian TrailO Championships, Hong Kong (PreO + TempO + Relay) | |
| 2020 | ||
| early November | World TrailO Championships, Hong Kong | |
| 2021 | ||
| 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)