| 30 Dec - 1 Jan | Thailand International Orienteering Championship 2019 |  Thailand | Asia | F | National Event | | | |
| 3 Jan | Big 5 O-week |  South Africa | Africa | F | World Ranking Event | S | |  |
| 4 Jan | SkidO, OBS-tävling |  Sweden | Europe | S | World Ranking Event | M | | |
| 5 Jan | SkidO, OBS-tävling | Sweden | Europe | S | World Ranking Event | L | | |
| 11 Jan | O-treff sprint |  Norway | Europe | S | World Ranking Event | M | | |
| 14 Jan - 19 Jan | World Masters Ski Orienteering Championships 2020 |  Austria | Europe | S | World Masters
Partner Event | | | |
| 25 Jan | SKi-O Ramsau | Austria | Europe | S | World Ranking Event | L | | |
| 25 Jan | Norte Alentejano O' Meeting - Sprint |  Portugal | Europe | F | World Ranking Event | S | | |
| 26 Jan | SKi-O Ramsau | Austria | Europe | S | World Ranking Event | M | | |
| 26 Jan | Norte Alentejano O' Meeting - Middle | Portugal | Europe | F | World Ranking Event | M | | |
| 1 Feb | Premi Comunitat Valenciana El Pinos |  Spain | Europe | F | World Ranking Event | L | | |
| 2 Feb | Premi Comunitat Valenciana El Pinos | Spain | Europe | F | World Ranking Event | M | | |
| 14 Feb | Championship of Russia |  Russian Federation | Europe | S | World Ranking Event | S | | |
| 15 Feb | Championship of Russia | Russian Federation | Europe | S | World Ranking Event | M | | |
| 15 Feb | NM mellom | Norway | Europe | S | World Ranking Event | M | | |
| 15 Feb | Maximus O-Meeting (Middle) | Spain | Europe | F | World Ranking Event | M | | |
| 15 Feb - 16 Feb | High Level Event Seminar 2020 |  International Orienteering Federation | | F | | L | | |
| 15 Feb | Maximus O-Meeting (Sprint) | Spain | Europe | F | World Ranking Event | S | | |
| 16 Feb | Maximus O-Meeting (Long) | Spain | Europe | F | World Ranking Event | L | | |
| 20 Feb - 26 Feb | Junior World Ski Orienteering Championships 2020 | Sweden | Europe | S | Junior World Championships
World Ranking Event | | | |
| 20 Feb - 26 Feb | European Youth Ski Orienteering Championships 2020 | Sweden | Europe | S | Regional Championships | | | |
| 20 Feb - 26 Feb | Ski Orienteering World Cup 2020 | Sweden | Europe | S | World Cup
World Ranking Event | | | |
| 21 Feb | Antalya Training Competitions |  Turkey | Europe | F | World Ranking Event | L | | |
| 22 Feb | Antalya Training Competitions | Turkey | Europe | F | World Ranking Event | M | | |
| 22 Feb | Israel Open 2020 - day2 |  Israel | Europe | F | World Ranking Event | | | |
| 23 Feb | Antalya Training Competitions | Turkey | Europe | F | World Ranking Event | S | | |
| 23 Feb | Portugal O Meeting 2020 | Portugal | Europe | F | World Ranking Event | L | | |
| 29 Feb | XXXII MURCIA COSTA CÁLIDA | Spain | Europe | F | World Ranking Event | L | | |
| 29 Feb | XXXII MURCIA COSTA CÁLIDA | Spain | Europe | F | World Ranking Event | S | | |
| 29 Feb | Meeting Internacional de Orientação de Arraiolos 2020 | Portugal | Europe | F | World Ranking Event | M | | |
| 1 Mar | XXXII MURCIA COSTA CÁLIDA | Spain | Europe | F | World Ranking Event | M | | |
| 7 Mar | Melbourne Sprint Weekend WRE |  Australia | Oceania | F | World Ranking Event | S | | |
| 7 Mar | Málaga Capital Europea del Deporte 2020 | Spain | Europe | F | World Ranking Event | S | | |
| 8 Mar | 15th Japan Trail Orienteering Championships |  Japan | Asia | T | World Ranking Event | P | | |
| 8 Mar - 15 Mar | European Ski Orienteering Championships 2020 | Russian Federation | Europe | S | Regional Championships
World Cup
World Ranking Event | | | |
| 8 Mar | Málaga Capital Europea del Deporte 2020 | Spain | Europe | F | World Ranking Event | S | | |
| 14 Mar | Copa Sul 2020 |  Brazil | South America | F | World Ranking Event | L | | |
| 13 May - 13 Jun | [Online] Let's Go Thailand! Virtual Orienteering Competition | Thailand | Asia | F | National Event | L | | |
| 16 May - 17 May | [Online] Alentejo Virtual TempO | Portugal | Europe | T | National Event | T | | |
| 19 May - 11 Jun | [Online] T.O.R.U.S CUP 2020 |  Czech Republic | Europe | T | National Event | L | | |
| 21 May | [Online] MOOVID - Milano Orbital Orienteering |  Italy | Europe | FT | National Event | L | | |
| 23 May | {Online] ONE DAY IN VENICE | Italy | Europe | T | National Event | L | | |
| 23 May | [Online] Minecraft-O Event 2 | Australia | Oceania | F | National Event | L | | |
| 24 May | [Online] Antioquia Trail-O virtual |  Colombia | South America | T | National Event | L | | |
| 30 May | [Online] Santander Trail-O Virtual - Girón-Villa de los Caballeros | Colombia | South America | T | National Event | L | | |
| 5 Jun - 13 Jun | [Online] 2020 HKOC Online TrailO – preO |  Hong Kong China | Asia | T | National Event | P | | |
| 7 Jun | [Online] The Rock Labyrinth | Russian Federation | Europe | T | National Event | P | | |
| 13 Jun | [Online] Virtual Trail-O COUFRJ: Landscapes Rio Tour | Brazil | South America | T | National Event | P | | |
| 21 Jun | [Online] Imagine-O | Turkey | Europe | T | National Event | L | | |
| 21 Jun | [Online] Historical Cup Dnipro Trail-O (PreO) |  Ukraine | Europe | T | National Event | P | | |
| 27 Jun - 28 Jun | [Online] Imagin-O | Turkey | Europe | F | National Event | L | | |
| 27 Jun | [Online] Bogotá-Cundinamarca Trail-O Virtual | Colombia | South America | T | National Event | P | | |
| 3 Jul - 11 Jul | [Online] 2020 HKOC Online TrailO – preO 2020 Series II – Explore the World Heritage | Hong Kong China | Asia | T | National Event | L | | |
| 4 Jul - 5 Jul | [Online] Imagin-O | Turkey | Europe | F | National Event | L | | |
| 17 Jul - 19 Jul | [Online] Lockdown Orienteering - Junior Event |  Great Britain | Europe | F | National Event | L | | |
| 8 Aug | Finnish TrailO Championships - PreO |  Finland | Europe | T | World Ranking Event | P | | |
| 8 Aug - 9 Aug | [Online] XXXII Trophy Excmo. Ayto. Ciudad Real International TRAIL-O | Spain | Europe | T | National Event | P | | |
| 9 Aug | Finnish TrailO Championships - Tempo | Finland | Europe | T | World Ranking Event | T | | |
| 21 Aug | Grano Games, Sprint-O | Finland | Europe | F | World Ranking Event | S | | |
| 29 Aug - 30 Aug | Finnish Championship Middle Distance | Finland | Europe | F | World Ranking Event | M | | |
| 29 Aug | Test race II |  Switzerland | Europe | F | World Ranking Event | L | | |
| 29 Aug | Belarus Sprint Orienteering Championships |  Belarus | Europe | F | World Ranking Event | S | | |
| 30 Aug | 8. Nationaler OL (Middle) | Switzerland | Europe | F | World Ranking Event | M | | |
| 6 Sep | Schweizermeisterschaft Sprint OL (Sprint) | Switzerland | Europe | F | World Ranking Event | S | | |
| 11 Sep | EMTBOC Open WRE Finland 2020 - Sprint | Finland | Europe | M | World Ranking Event | S | | |
| 12 Sep | EMTBOC Open WRE Finland 2020 - Middle | Finland | Europe | M | World Ranking Event | M | | |
| 12 Sep | Finnish Championship Long Distance | Finland | Europe | F | World Ranking Event | L | | |
| 12 Sep | Campionato Italiano Sprint | Italy | Europe | F | World Ranking Event | S | | |
| 13 Sep | Schweizermeisterschaft Landgdistanz OL | Switzerland | Europe | F | World Ranking Event | L | | |
| 13 Sep | Campionato Italiano Long Distance | Italy | Europe | F | World Ranking Event | L | | |
| 13 Sep | DM Lang |  Denmark | Europe | F | World Ranking Event | L | | |
| 19 Sep | Finnish Championships in Sprint Orienteering | Finland | Europe | F | World Ranking Event | S | | |
| 26 Sep | Suunto Games in Estonia |  Estonia | Europe | F | World Ranking Event | L | | |
| 27 Sep | Suunto Games in Estonia | Estonia | Europe | F | World Ranking Event | M | | |
| 4 Oct | Beograd-Open-2020 |  Serbia | Europe | F | World Ranking Event | S | | |
| 4 Oct | Campionato Italiano Middle | Italy | Europe | F | World Ranking Event | M | | |
| 6 Oct - 29 Oct | [Online] T.O.R.U.S. Cup Autumn 2020 | Czech Republic | Europe | T | | L | | |
| 10 Oct | Siben Trail-O Cup 2020 | Italy | Europe | T | World Ranking Event | T | | |
| 11 Oct | Siben Trail-O Cup 2020 | Italy | Europe | T | World Ranking Event | P | | |
| 17 Oct | FinTrailO TempO | Finland | Europe | T | World Ranking Event | T | | |
| 18 Oct | FinTrailO PreO | Finland | Europe | T | World Ranking Event | P | | |
| 18 Oct | Coppa Italia Long Distance 12^ pr. | Italy | Europe | F | World Ranking Event | L | | |
| 24 Oct | New Zealand Long Distance Orienteering Championship 2020 |  New Zealand | Oceania | F | World Ranking Event | L | | |
| 25 Oct | New Zealand Middle Distance Orienteering Championship 2020 | New Zealand | Oceania | F | World Ranking Event | M | | |
| 1 Nov | Metropolis of South East Europe 2020 | Serbia | Europe | F | World Ranking Event | M | | |
| 14 Nov | WMG/WMOC2021 Kansai Pre-event Three days | Japan | Asia | F | World Ranking Event | M | | |
| 15 Nov | WMG/WMOC2021 Kansai Pre-event Three days | Japan | Asia | F | World Ranking Event | M | | |
| 15 Nov | [Online] The Rock Labyrinth | Russian Federation | Europe | T | | P | | |
| 1 Dec - 24 Dec | [Online] TORUS Advent Calendar 2020 | Czech Republic | Europe | FT | National Event | L | | |
| 17 Dec | Championship of Russia | Russian Federation | Europe | S | World Ranking Event | L | | |
| 18 Dec | Championship of Russia | Russian Federation | Europe | S | World Ranking Event | M | | |
