| Ontario to Ames | 5,487.09 mi (8,830.62 km) |
| Ontario to Amorebieta | 5,704.96 mi (9,181.24 km) |
| Ontario to Amposta | 5,947.41 mi (9,571.44 km) |
| Ontario to Amurrio | 5,702.22 mi (9,176.83 km) |
| Ontario to Andoain | 5,732.37 mi (9,225.36 km) |
| Ontario to Andraitx | 6,071.92 mi (9,771.81 km) |
| Ontario to Andujar | 5,885.06 mi (9,471.09 km) |
| Ontario to Antequera | 5,909.31 mi (9,510.11 km) |
| Ontario to Antigua | 5,841.49 mi (9,400.97 km) |
| Ontario to Aranda de Duero | 5,737.05 mi (9,232.88 km) |
| Ontario to Aranjuez | 5,814.08 mi (9,356.85 km) |
| Ontario to Archena | 5,994.34 mi (9,646.95 km) |
| Ontario to Arcos de la Frontera | 5,868.48 mi (9,444.40 km) |
| Ontario to Arenys de Mar | 5,980.25 mi (9,624.28 km) |
| Ontario to Arenys de Munt | 5,978.39 mi (9,621.29 km) |
