Calendrier et événements
| Date | Événement | Détails |
|---|---|---|
| 27 mai | Sulphur Springs Trail Races Ancaster road-running | Sulphur Springs Trail Races Détails |
| 27 mai | Ontario Para Athletics Championships Toronto Track and Field Centre – Toronto, ON outdoor | Ontario Para Athletics Championships Détails |
| 27 mai | Throwers Club Meet 1 Toronto Track and Field Centre – Toronto, ON outdoor | Throwers Club Meet 1 Détails |
| 27 mai | GTA All Comers Track Prep Meet Toronto Track and Field Centre – Toronto, ON outdoor | GTA All Comers Track Prep Meet Détails |
| 28 mai | Bronte Creek 5k and 10k Oakville road-running | Bronte Creek 5k and 10k Détails |
| 28 mai | Ontario 10K Race Walk Championships (The Roman Olszewski Racewalks) Hanlan's Point - Toronto, ON outdoor | Ontario 10K Race Walk Championships (The Roman Olszewski Racewalks) Détails |
| 28 mai | Bob Vigars Classic Western Alumni Stadium - London, ON outdoor | Bob Vigars Classic Détails |
| 30 mai | UTTC Twilight 1 Varsity Stadium - Toronto, ON outdoor | UTTC Twilight 1 Détails |
| 30 mai - 1 mai | OFSAA Central Region Toronto Track and Field Centre – Toronto, ON outdoor | OFSAA Central Region Détails |
| 30 mai | OFSAA East Region outdoor | OFSAA East Region Détails |
| 30 mai | OFSAA North Region outdoor | OFSAA North Region Détails |
| 30 mai | OFSAA South Region outdoor | OFSAA South Region Détails |
| 31 mai | Ottawa Twilight Series 1 Terry Fox Athletic Facility - Ottawa, ON outdoor | Ottawa Twilight Series 1 Détails |
| 31 mai - 1 mai | OFSAA North Region Laurentian Community Track at Laurentian University - Sudbury, ON outdoor | OFSAA North Region Détails |
| 1 jun - 2 jun | OFSAA East Region Terry Fox Athletic Facility - Ottawa, ON outdoor | OFSAA East Region Détails |
| 1 jun - 2 jun | OFSAA South Region Terry Fox Stadium - Brampton, ON outdoor | OFSAA South Region Détails |
| 2 jun | Hamilton Hoka Season Opener Twilight Mona Campbell Track - Hamilton, ON outdoor | Hamilton Hoka Season Opener Twilight Détails |
| 2 jun - 3 jun | OFSAA West Region Jacob Hespeler SS - Cambridge, ON outdoor | OFSAA West Region Détails |
| 3 jun | Great Mansfield Outdoors 2023 Mulmur road-running | Great Mansfield Outdoors 2023 Détails |
| 3 jun | Rotary Huron Shore Run Southampton road-running | Rotary Huron Shore Run Détails |
| 3 jun | Fiddle 50 Fiddle Park, Shelburne road-running | Fiddle 50 Détails |
| 6 jun | YUTC Twilight 1 Toronto Track and Field Centre – Toronto, ON outdoor | YUTC Twilight 1 Détails |
| 6 jun | Kanata Race Day Ottawa road-running | Kanata Race Day Détails |
| 8 jun - 10 jun | OFSAA Championships Terry Fox Athletic Facility - Ottawa, ON outdoor | OFSAA Championships Détails |
| 14 jun | Ottawa Twilight Series 2 Terry Fox Athletic Facility - Ottawa, ON outdoor | Ottawa Twilight Series 2 Détails |
| 14 jun | Hamilton Hoka 100m & 1500m Night Mona Campbell Track - Hamilton, ON outdoor | Hamilton Hoka 100m & 1500m Night Détails |
| 17 jun | Under Armour Toronto 10K Toronto road-running | Under Armour Toronto 10K Détails |
| 17 jun | Waterloo 10km Classic Road Race, 5km & 3km Waterloo road-running | Waterloo 10km Classic Road Race, 5km & 3km Détails |
| 17 jun | District D Toronto Track and Field Centre – Toronto, ON outdoor | District D Détails |
| 17 jun | District C Davidson Centre - Kincardine, ON outdoor | District C Détails |
| 17 jun | District E St. Theresa's C.H.S. - Midland, ON outdoor | District E Détails |
| 18 jun | District B Ray Lewis Track & Field Complex (Mohawk Park) - Hamilton, ON outdoor | District B Détails |
| 20 jun | YUTC Twilight 2 Toronto Track and Field Centre – Toronto, ON outdoor | YUTC Twilight 2 Détails |
| 21 jun | Royal City Inferno Track & Field Festival Alumni Stadium - Guelph, ON outdoor | Royal City Inferno Track & Field Festival Détails |
| 21 jun | Ottawa Twilight Series 3 Terry Fox Athletic Facility - Ottawa, ON outdoor | Ottawa Twilight Series 3 Détails |
| 23 jun - 25 jun | Ontario Combined Events Championships Toronto Track and Field Centre – Toronto, ON outdoor | Ontario Combined Events Championships Détails |
| 24 jun | Community Strong Festival Sault Ste Marie road-running | Community Strong Festival Détails |
| 24 jun | Pride & Remembrance Run Toronto road-running | Pride & Remembrance Run Détails |
| 24 jun | Johnny Loaring Classic Alumni Field - Windsor, ON outdoor | Johnny Loaring Classic Détails |
| 24 jun - 25 jun | NXTCHAMP Invitational Toronto Track and Field Centre – Toronto, ON outdoor | NXTCHAMP Invitational Détails |
| 24 jun - 25 jun | Ontario Combined Events Championships Toronto Track and Field Centre – Toronto, ON outdoor | Ontario Combined Events Championships Détails |
| 25 jun | Heart Lake Run 5K Brampton road-running | Heart Lake Run 5K Détails |
| 25 jun | Sunburn Solstice Trail Race Mount Hope road-running | Sunburn Solstice Trail Race Détails |
| 25 jun | Throwers Club Meet 2 Toronto Track and Field Centre – Toronto, ON outdoor | Throwers Club Meet 2 Détails |
| 25 jun | CANCELLED – Throwers Club Meet 2 Toronto Track and Field Centre – Toronto, ON outdoor | CANCELLED – Throwers Club Meet 2 Détails |
| 27 jun | UTTC Twilight 2 Varsity Stadium - Toronto, ON outdoor | UTTC Twilight 2 Détails |
| 28 jun | Ottawa Twilight Series 4 Terry Fox Athletic Facility - Ottawa, ON outdoor | Ottawa Twilight Series 4 Détails |
| 28 jun | Track North Sudbury Twilight Series 2 Laurentian Community Track at Laurentian University - Sudbury, ON outdoor | Track North Sudbury Twilight Series 2 Détails |
| 1 jui | Hamilton Puma Canada Day Twilight Mona Campbell Track - Hamilton, ON outdoor | Hamilton Puma Canada Day Twilight Détails |
| 4 jui | Toronto Track 800m Night Varsity Stadium - Toronto, ON outdoor | Toronto Track 800m Night Détails |