| Ontario to Anderson (California) | 512.32 mi (824.50 km) |
| Ontario to Anderson (Indiana) | 1,798.32 mi (2,894.11 km) |
| Ontario to Anderson (South Carolina) | 1,986.04 mi (3,196.22 km) |
| Ontario to Anderson Creek (North Carolina) | 2,184.35 mi (3,515.37 km) |
| Ontario to Andover (Kansas) | 1,171.11 mi (1,884.72 km) |
| Ontario to Andover (Minnesota) | 1,497.54 mi (2,410.05 km) |
| Ontario to Andrews (Texas) | 877.81 mi (1,412.69 km) |
| Ontario to Angleton (Texas) | 1,344.64 mi (2,163.99 km) |
| Ontario to Ankeny (Iowa) | 1,406.71 mi (2,263.89 km) |
| Ontario to Ann Arbor (Michigan) | 1,912.07 mi (3,077.18 km) |
| Ontario to Anna (Texas) | 1,209.24 mi (1,946.08 km) |
| Ontario to Annandale (Virginia) | 2,252.11 mi (3,624.41 km) |
| Ontario to Annapolis (Maryland) | 2,288.44 mi (3,682.89 km) |
| Ontario to Annapolis Neck (Maryland) | 2,288.87 mi (3,683.58 km) |
| Ontario to Anniston (Alabama) | 1,816.98 mi (2,924.15 km) |
