| Athletics Niagara | Blue Devils Athletics Club |
| BOOST Athletics Club | Brantford T.F.C. |
| Brantford TFC | Brock Badgers |
| Burlington TFC | C.A.N.I. Athletics |
| Central Toronto Athletic Club | Centro Scuola T.F.C. |
| Dundas Valley Track Club | Durham Dragons Athletics |
| Eclipse Track & Field Inc | Etobicoke Huskies-Striders Track and Field Club |
| Extreme Velocity Track Club | Flying Angels - Markham |
| Flying Angels - North York | Golden Eagle Track Club |
| Golden Eagles Track Club | Hamilton Olympic Club |
| Harbour Track - Hamilton | Kitchener Waterloo TFA |
| Laurel Creek T.F.C | London Western T.F.C |
| London Western TFC | Mississauga Olympians T&F A.A. |
| Mississauga T.F.C. | Mississauga TFC |
| Monarch Athletics Club | Newmarket Huskies Track Club |
| Niagara Olympic Club | Oakville Renegades Track Club |
| Royal City Athletics Club | Runners Edge Track Club |
| Saugeen TFC | Saugeen Track & Field Association |
| South Simcoe Dufferin TFC | St Thomas Legion Track & Field Club |
| Stratford Sabrecats Track Club | StrideWise Running |
| Thorold Elite Track Club | Time Bandits |
| Toronto Racers Athletic Club | Toronto West Athletics |
| Unattached Ontario | University of Toronto TC |
| University of Toronto Track Club | University of Windsor Athletics Club |
| UTTC | Windsor Legion T.F.C |
| York Region Runners Club | York University Track & Field Club |