| Ontario to Alderwood Manor (Washington) | 981.91 mi (1,580.23 km) |
| Ontario to Aldine (Texas) | 1,330.76 mi (2,141.65 km) |
| Ontario to Alexander City (Alabama) | 1,819.48 mi (2,928.17 km) |
| Ontario to Alexandria (Louisiana) | 1,470.57 mi (2,366.66 km) |
| Ontario to Alexandria (Minnesota) | 1,425.66 mi (2,294.37 km) |
| Ontario to Alexandria (Virginia) | 2,258.08 mi (3,634.02 km) |
| Ontario to Algonquin (Illinois) | 1,678.65 mi (2,701.52 km) |
| Ontario to Alhambra (California) | 30.44 mi (48.99 km) |
| Ontario to Alice (Texas) | 1,234.70 mi (1,987.06 km) |
| Ontario to Aliso Viejo (California) | 32.56 mi (52.40 km) |
| Ontario to Allen (Texas) | 1,204.65 mi (1,938.70 km) |
| Ontario to Allen Park (Michigan) | 1,938.42 mi (3,119.59 km) |
| Ontario to Allendale (Michigan) | 1,806.80 mi (2,907.76 km) |
| Ontario to Allentown (Pennsylvania) | 2,336.09 mi (3,759.57 km) |
| Ontario to Alliance (Ohio) | 2,040.58 mi (3,284.00 km) |
