| Ontario to Enterprise (Nevada) | 191.39 mi (308.02 km) |
| Ontario to Enumclaw (Washington) | 937.64 mi (1,508.99 km) |
| Ontario to Ephrata (Pennsylvania) | 2,300.34 mi (3,702.05 km) |
| Ontario to Erie (Colorado) | 806.45 mi (1,297.86 km) |
| Ontario to Erie (Pennsylvania) | 2,097.87 mi (3,376.20 km) |
| Ontario to Erlanger (Kentucky) | 1,854.76 mi (2,984.94 km) |
| Ontario to Escanaba (Michigan) | 1,793.70 mi (2,886.68 km) |
| Ontario to Escondido (California) | 69.65 mi (112.08 km) |
| Ontario to Española (New Mexico) | 666.38 mi (1,072.43 km) |
| Ontario to Essex (Maryland) | 2,289.95 mi (3,685.32 km) |
| Ontario to Essex Junction (Vermont) | 2,453.89 mi (3,949.15 km) |
| Ontario to Estelle (Louisiana) | 1,633.35 mi (2,628.62 km) |
| Ontario to Estero (Florida) | 2,189.58 mi (3,523.78 km) |
| Ontario to Euclid (Ohio) | 2,021.70 mi (3,253.61 km) |
| Ontario to Eufaula (Alabama) | 1,879.15 mi (3,024.20 km) |
