| Ontario to Effingham (Illinois) | 1,642.43 mi (2,643.23 km) |
| Ontario to Eggertsville (New York) | 2,165.47 mi (3,484.99 km) |
| Ontario to Egypt Lake-Leto (Florida) | 2,108.74 mi (3,393.69 km) |
| Ontario to El Cajon (California) | 93.27 mi (150.11 km) |
| Ontario to El Campo (Texas) | 1,296.27 mi (2,086.14 km) |
| Ontario to El Centro (California) | 146.38 mi (235.58 km) |
| Ontario to El Cerrito (California) | 375.15 mi (603.75 km) |
| Ontario to El Dorado (Arkansas) | 1,432.51 mi (2,305.41 km) |
| Ontario to El Dorado (Kansas) | 1,187.00 mi (1,910.29 km) |
| Ontario to El Dorado Hills (California) | 373.13 mi (600.50 km) |
| Ontario to El Mirage (Arizona) | 304.61 mi (490.22 km) |
| Ontario to El Monte (California) | 24.31 mi (39.13 km) |
| Ontario to El Paso (Texas) | 665.12 mi (1,070.41 km) |
| Ontario to El Paso de Robles (California) | 205.24 mi (330.30 km) |
| Ontario to El Reno (Oklahoma) | 1,117.41 mi (1,798.29 km) |
