| Ontario to Troy (Michigan) | 1,943.98 mi (3,128.54 km) |
| Ontario to Troy (Missouri) | 1,512.14 mi (2,433.56 km) |
| Ontario to Troy (New York) | 2,424.90 mi (3,902.51 km) |
| Ontario to Troy (Ohio) | 1,875.85 mi (3,018.88 km) |
| Ontario to Truckee (California) | 393.42 mi (633.15 km) |
| Ontario to Trujillo Alto (Puerto Rico) | 3,339.14 mi (5,373.82 km) |
| Ontario to Trumbull Center (Connecticut) | 2,453.43 mi (3,948.41 km) |
| Ontario to Trussville (Alabama) | 1,773.81 mi (2,854.67 km) |
| Ontario to Tualatin (Oregon) | 829.68 mi (1,335.24 km) |
| Ontario to Tuckahoe (Virginia) | 2,238.78 mi (3,602.98 km) |
| Ontario to Tucker (Georgia) | 1,906.13 mi (3,067.62 km) |
| Ontario to Tucson (Arizona) | 410.52 mi (660.68 km) |
| Ontario to Tucson Estates (Arizona) | 396.34 mi (637.84 km) |
| Ontario to Tucson Mountains (Arizona) | 396.59 mi (638.25 km) |
| Ontario to Tukwila (Washington) | 959.44 mi (1,544.06 km) |
