| Potomac to Enterprise (Nevada) | 2,079.66 mi (3,346.89 km) |
| Potomac to Enumclaw (Washington) | 2,295.67 mi (3,694.53 km) |
| Potomac to Ephrata (Pennsylvania) | 97.01 mi (156.12 km) |
| Potomac to Erie (Colorado) | 1,479.63 mi (2,381.23 km) |
| Potomac to Erie (Pennsylvania) | 262.24 mi (422.03 km) |
| Potomac to Erlanger (Kentucky) | 396.74 mi (638.50 km) |
| Potomac to Escanaba (Michigan) | 685.73 mi (1,103.57 km) |
| Potomac to Escondido (California) | 2,245.41 mi (3,613.64 km) |
| Potomac to Española (New Mexico) | 1,589.41 mi (2,557.92 km) |
| Potomac to Essex (Maryland) | 44.81 mi (72.11 km) |
| Potomac to Essex Junction (Vermont) | 432.75 mi (696.44 km) |
| Potomac to Estelle (Louisiana) | 969.01 mi (1,559.47 km) |
| Potomac to Estero (Florida) | 909.48 mi (1,463.66 km) |
| Potomac to Euclid (Ohio) | 289.09 mi (465.24 km) |
| Potomac to Eufaula (Alabama) | 663.80 mi (1,068.29 km) |
