| 25 Dec | Hong Kong Annual Orienteering Championships 2025 (Middle) |  Hong Kong China | Asia | F | World Ranking Event | M | |  |
| 26 Dec | Hong Kong Annual Orienteering Championships 2025 (Sprint) | Hong Kong China | Asia | F | World Ranking Event | S | | |
| 28 Dec | Hong Kong Annual Orienteering Championships 2025 (Long) | Hong Kong China | Asia | F | World Ranking Event | L | | |
| 29 Dec | 8. Ski-OL Val Mustair |  Switzerland | Europe | S | World Ranking Event | S | | |
| 30 Dec | Big 5 O-week |  South Africa | Africa | F | World Ranking Event | M | | |
| 30 Dec | 9. Ski-OL Val Mustair | Switzerland | Europe | S | World Ranking Event | M | | |
| 31 Dec | 10. Ski-OL Val Mustair | Switzerland | Europe | S | World Ranking Event | M | 29/12 |  |
| 2 Jan | Big 5 O-week | South Africa | Africa | F | World Ranking Event | S | 7/12 | |
| 10 Jan | Ski-O Estonian Championships in middle |  Estonia | Europe | S | World Ranking Event | M | 5/1 | |
| 10 Jan | Madeira Orienteering Festival 2026 |  Portugal | Europe | F | World Ranking Event | S | 30/12 | |
| 11 Jan | Madeira Orienteering Festival 2026 | Portugal | Europe | F | World Ranking Event | M | 30/12 | |
| 11 Jan | Ski-O Estonian Championships in long distance | Estonia | Europe | S | World Ranking Event | L | 5/1 | |
| 22 Jan - 25 Jan | Ski Orienteering World Cup Round 1 2026 and World U23 Ski Orienteering Championships 2026 |  Bulgaria | Europe | S | World Cup | | | |
| 23 Jan - 25 Jan | World Master Ski Orienteering Championships 2026 | Bulgaria | Europe | S | World Masters | | 14/1 | |
| 24 Jan - 26 Jan | Oceania Orienteering Championships 2026 |  Australia | Oceania | F | Regional Championships
World Ranking Event | | | |
