| World Championships – Women – Road race | 2025 |  | 27 September |
| Others – Solitaire du Figaro | 2025 | | 30 August–27 September |
| World Championships – Men – Lightweight single sculls | 2025 | | 27 September |
| World Championships – Men – Eights | 2025 | | 27 September |
| World Championships – Women – Double sculls | 2025 | | 26 September |
| World Championships – Men – Coxless fours | 2025 | | 26 September |
| World Championships – Men – Quadruple sculls | 2025 | | 26 September |
| World Championships – Men – Double sculls | 2025 | | 26 September |
| World Championships – Men – Lightweight double sculls | 2025 | | 25 September |
| World Championships – Men – Coxless pairs | 2025 | | 25 September |
| Others – Ballon d'Or | 2025 | | 22 September |
| World Championships – Women – High jump | 2025 | | 21 September |
| World Championships – Women – 4x400 m | 2025 | | 21 September |
| World Championships – Women – 4x100 m | 2025 | | 21 September |
| World Championships – Women – Time trial | 2025 | | 21 September |
| World Championships – Men – Decathlon | 2025 | | 20–21 September |
| World Championships – Men – Discus throw | 2025 | | 21 September |
| World Championships – Men – 4x400 m | 2025 | | 21 September |
| World Championships – Men – 4x100 m | 2025 | | 21 September |
| Formula 1 – Grand Prix – Azerbaijan Grand Prix | 2025 | | 21 September |
| World Championships – Men – 5000 m | 2025 | | 21 September |
| World Championships – Women – 800 m | 2025 | | 21 September |
| World Championships – Men – Time trial | 2025 | | 21 September |
| World Championships – Women – 5000 m | 2025 | | 20 September |
| World Championships – Women – Shot put | 2025 | | 20 September |
| World Championships – Women – Heptathlon | 2025 | | 19–20 September |
| World Championships – Women – 20 km walk | 2025 | | 20 September |
| World Championships – Women – Javelin throw | 2025 | | 20 September |
| World Championships – Men – 20 km walk | 2025 | | 20 September |
| World Championships – Men – 800 m | 2025 | | 20 September |
| World Championships – Women – 200 m | 2025 | | 19 September |
| World Championships – Men – 200 m | 2025 | | 19 September |
| World Championships – Men – Triple jump | 2025 | | 19 September |
| World Championships – Men – 400 m hurdles | 2025 | | 19 September |
| World Championships – Women – 400 m hurdles | 2025 | | 19 September |
| World Championships – Women – Triple jump | 2025 | | 18 September |
| World Championships – Men – 400 m | 2025 | | 18 September |
| World Championships – Men – Javelin throw | 2025 | | 18 September |
| World Championships – Women – 400 m | 2025 | | 18 September |
| World Championships – Men – 1500 m | 2025 | | 17 September |
| World Championships – Women – 3000 m steeple | 2025 | | 17 September |
| World Championships – Women – Pole vault | 2025 | | 17 September |
| World Championships – Men – Long jump | 2025 | | 17 September |
| World Championships – Women – 1500 m | 2025 | | 16 September |
| World Championships – Men – High jump | 2025 | | 16 September |
| World Championships – Men – 110 m hurdles | 2025 | | 16 September |
| World Championships – Men – Hammer throw | 2025 | | 16 September |
| World Championships – Men – Marathon | 2025 | | 15 September |
| World Championships – Men – 3000 m steeple | 2025 | | 15 September |
| World Championships – Men – Pole vault | 2025 | | 15 September |
| World Championships – Women – Hammer throw | 2025 | | 15 September |
| World Championships – Women – 100 m hurdles | 2025 | | 15 September |
| World Championships – Women – Marathon | 2025 | | 14 September |
| World Championships – Women – Long jump | 2025 | | 14 September |
| World Championships – Men – 10000 m | 2025 | | 14 September |
| World Championships – Women – Discus throw | 2025 | | 14 September |
| World Championships – Women – 100 m | 2025 | | 14 September |
| World Championships – Men – 100 m | 2025 | | 14 September |
| Continental championships – Europe – Men | 2025 | | 27 August–14 September |
| UCI World Tour – Vuelta a España – General standings | 2025 | | 23 August–14 September |
| World Rally Championship (WRC) – Rallies – Rally Chile | 2025 | | 11–14 September |
| Southern hemisphere – Freedom Cup (Match 2) | 2025 | | 13 September |
| Southern hemisphere – Freedom Cup | 2025 | | 6–13 September |
| World Championships – Men – Shot put | 2025 | | 13 September |
| World Championships – Women – 10000 m | 2025 | | 13 September |
| World Championships – Men – 35 km walk | 2025 | | 13 September |
| World Championships – Women – 35 km walk | 2025 | | 13 September |
| World Championships – Mixed – 4x400 m | 2025 | | 13 September |
| Formula 1 – Grand Prix – Italian Grand Prix | 2025 | | 7 September |
| ATP Tour – Grand Slam – US Open | 2025 | | 24 August–7 September |
| ATP Tour – Grand Slam – US Open (Final) | 2025 | | 7 September |
| WTA Tour – Grand Slam – US Open | 2025 | | 24 August–6 September |
| WTA Tour – Grand Slam – US Open (Final) | 2025 | | 6 September |
| Southern hemisphere – Freedom Cup (Match 1) | 2025 | | 6 September |
| ATP Tour – Grand Slam – US Open (Semifinal #1) | 2025 | | 5 September |
| ATP Tour – Grand Slam – US Open (Semifinal #2) | 2025 | | 5 September |
| WTA Tour – Grand Slam – US Open (Semifinal #2) | 2025 | | 4 September |
| WTA Tour – Grand Slam – US Open (Semifinal #1) | 2025 | | 4 September |
| ATP Tour – Grand Slam – US Open (Quarterfinal #4) | 2025 | | 3 September |
| ATP Tour – Grand Slam – US Open (Quarterfinal #3) | 2025 | | 3 September |
| ATP Tour – Grand Slam – US Open (Quarterfinal #2) | 2025 | | 3 September |
| ATP Tour – Grand Slam – US Open (Quarterfinal #1) | 2025 | | 3 September |
| WTA Tour – Grand Slam – US Open (Quarterfinal #3) | 2025 | | 2 September |
| WTA Tour – Grand Slam – US Open (Quarterfinal #1) | 2025 | | 2 September |
| WTA Tour – Grand Slam – US Open (Quarterfinal #2) | 2025 | | 2 September |
| WTA Tour – Grand Slam – US Open (Quarterfinal #4) | 2025 | | 2 September |
| World Championships – Men's singles | 2025 | | 26–31 August |
| World Championships – Women's singles | 2025 | | 26–31 August |
| World Championships – Men's doubles | 2025 | | 25–31 August |
| World Championships – Women's doubles | 2025 | | 25–31 August |
| World Championships – Mixed doubles | 2025 | | 25–31 August |
| Formula 1 – Grand Prix – Dutch Grand Prix | 2025 | | 31 August |
| World Rally Championship (WRC) – Rallies – Rally Paraguay | 2025 | | 28–31 August |
| Ultra-Trail du Mont-Blanc – Men | 2025 | | 30 August |
| Ultra-Trail du Mont-Blanc – Women | 2025 | | 30 August |
Past events
