| Date | Event | Details | Results | |
|---|---|---|---|---|
| 2018 | ||||
| May 29 | YUTC Summer Twilight #2 Toronto Track & Field Centre – Toronto, ON outdoor | YUTC Summer Twilight #2 Details | Results | |
| May 28 | Hamilton Season Opener Hamilton, ON | Hamilton Season Opener Details | ||
| May 28 | AO 10,000m Race Walk Championships Rescheduled Toronto, ON | AO 10,000m Race Walk Championships Rescheduled Details | ||
| May 27 | Bob Vigars Classic TD Waterhouse Stadium – London, ON outdoor | Bob Vigars Classic Details | Results | |
| May 27 | Hamilton Season Opener Mona Campbell Track – Hamilton, ON outdoor | Hamilton Season Opener Details | Results | |
| May 27 | Ottawa Race Weekend Martathon and Half Marathon Ottawa road-running | Ottawa Race Weekend Martathon and Half Marathon Details | ||
| May 27 | Dairy Capital Run 10k, 5k, 2k Woodstock road-running | Dairy Capital Run 10k, 5k, 2k Details | ||
| May 27 | Dairy Capital Run 2k 5k 10k Woodstock road-running | Dairy Capital Run 2k 5k 10k Details | ||
| May 27 | Bob Vigars Classic London, ON | Bob Vigars Classic Details | ||
| May 27 | Throwers Club Meet #1 Toronto, ON | Throwers Club Meet #1 Details | ||
| May 26 | Throwers Club Meet #1 Toronto Track and Field Centre – Toronto, ON outdoor | Throwers Club Meet #1 Details | Results | |
| May 26 | Mississauga Olympians Spring Tune Up Courtney Park Fields – Mississauga, ON outdoor | Mississauga Olympians Spring Tune Up Details | Results | |
| May 26 | MEC London Race THREE, 5K/10K/Half Marathon/Full Marathon Ro London road-running | MEC London Race THREE, 5K/10K/Half Marathon/Full Marathon Ro Details | ||
| May 26 | Ottawa Race Weekend Marathon 10km, 5km, 2km Ottawa road-running | Ottawa Race Weekend Marathon 10km, 5km, 2km Details | ||
| May 25 | Speed River Twilight #1 Guelph, ON | Speed River Twilight #1 Details | ||
| May 23 | UTTC Twilight #1 Toronto, ON | UTTC Twilight #1 Details | ||
| May 22 | YUTC Summer Twilight #1 Toronto Track & Field Centre – Toronto, ON outdoor | YUTC Summer Twilight #1 Details | Results | |
| May 20 | Johnny Loaring Classic Windsor, ON | Johnny Loaring Classic Details | ||
| May 19 | Johnny Loaring Classic University of Windsor Stadium – Windsor, ON outdoor | Johnny Loaring Classic Details | Results | |
| May 19 | MEC Burlington Race TWO, 5K/10K/Half Marathon Hamilton road-running | MEC Burlington Race TWO, 5K/10K/Half Marathon Details | ||
| May 19 | Night Flight (UWAC Downtown Windsor Pole Vault) Windsor, ON | Night Flight (UWAC Downtown Windsor Pole Vault) Details | ||
| May 19 | UWAC Downtown Windsor Pole Vault Windsor, ON | UWAC Downtown Windsor Pole Vault Details | ||
| May 18 | LGSSAA Thousand Island SS – Brockville, ON outdoor | LGSSAA Details | Results | |
| May 17 | Bolton Pole Vault Twilight Meet 1 Humberview S.S. – Toronto, ON outdoor | Bolton Pole Vault Twilight Meet 1 Details | Results | |
| May 16 | Bay of Quinte Championships Mary Ann Sills Park – Belleville, ON outdoor | Bay of Quinte Championships Details | Results | |
| May 15 | Speed River Twilight #2 University of Guelph Alumni Stadium – Guelph, ON outdoor | Speed River Twilight #2 Details | Results | |
| May 13 | AO T&F Championship Series #1 (RCLDS 1: The London 10K) TD Waterhouse Stadium – London, ON outdoor | AO T&F Championship Series #1 (RCLDS 1: The London 10K) Details | Results | |
| May 13 | Spring Thaw 10km and 4km Belleville road-running | Spring Thaw 10km and 4km Details | ||
| May 13 | Sudbury Rocks Race Run or Walk for Diabetes Sudbury road-running | Sudbury Rocks Race Run or Walk for Diabetes Details | ||
| May 13 | The London 10,000m (AO 10K Track Championships) London, ON | The London 10,000m (AO 10K Track Championships) Details | ||
| May 13 | Cruiser Classic 1 Brampton, ON | Cruiser Classic 1 Details | ||
| May 12 | Cruisers Classic #1 Terry Fox Stadium – Brampton, ON outdoor | Cruisers Classic #1 Details | Results | |
| May 12 | Seven Bridges Run 5km and 10km, trail Orangeville road-running | Seven Bridges Run 5km and 10km, trail Details | ||
| May 12 | Seaton Soaker, 12k, 15k, 25k, 50k Pickering road-running | Seaton Soaker, 12k, 15k, 25k, 50k Details | ||
| May 12 | MEC Barrie Race TWO, 5k/10k/15k Springwater road-running | MEC Barrie Race TWO, 5k/10k/15k Details | ||
| May 11 | Michelle Foley – Bay of Quinte Invitational Mary Ann Sills Park – Belleville, ON outdoor | Michelle Foley – Bay of Quinte Invitational Details | Results | |
| May 10 | Bolton Pole Vault Allcomers #2 Bolton, ON | Bolton Pole Vault Allcomers #2 Details | ||
| May 8 - May 9 | Durham Classic Oshawa Civic Centre – Oshawa, ON outdoor | Durham Classic Details | Results | |
| May 6 | SWO Field Series #1 TD Waterhouse Stadium – London, ON outdoor | SWO Field Series #1 Details | Results | |
| May 6 | MEC Toronto Road Race THREE 2018, 5K/10K/15K Toronto road-running | MEC Toronto Road Race THREE 2018, 5K/10K/15K Details | ||
| May 6 | MEC Kitchener Race ONE, 1k/3k/5k Kitchener road-running | MEC Kitchener Race ONE, 1k/3k/5k Details | ||
| May 6 | Toronto Marathon, half marathon, 10 and 5 km. Toronto road-running | Toronto Marathon, half marathon, 10 and 5 km. Details | ||
| May 6 | SWO Field Series #2 Cancelled London, ON | SWO Field Series #2 Cancelled Details | ||
| May 4 | Hungerford-Burnbrae Farms Classic Thousand Island SS – Brockville, ON outdoor | Hungerford-Burnbrae Farms Classic Details | Results | |
| May 3 | Bolton Pole Vault Allcomers #1 Bolton, ON | Bolton Pole Vault Allcomers #1 Details | ||
| Apr 28 | Roland Games 3000m Invitational Centennial Stadium – Etobicoke, ON outdoor | Roland Games 3000m Invitational Details | Results | |
| Apr 28 | Pick Your Poison 12.5K, 25Km, 50km Horseshoe Valley road-running | Pick Your Poison 12.5K, 25Km, 50km Details | ||
| Apr 28 | MEC Burlington Race ONE, 1K kids/3K/9K/12K Trail Dundas Valley road-running | MEC Burlington Race ONE, 1K kids/3K/9K/12K Trail Details | ||
| Apr 28 | Merrickville Heritage Classic 10 km Jewel of Rideau, 5 km Ca Jasper road-running | Merrickville Heritage Classic 10 km Jewel of Rideau, 5 km Ca Details | ||
| Apr 28 | Commonwealth Youth Last Chance 3 London, ON | Commonwealth Youth Last Chance 3 Details | ||
