| Potomac to Elyria (Ohio) | 306.24 mi (492.84 km) |
| Potomac to Emeryville (California) | 2,417.15 mi (3,890.03 km) |
| Potomac to Emmaus (Pennsylvania) | 138.42 mi (222.76 km) |
| Potomac to Emporia (Kansas) | 1,023.36 mi (1,646.94 km) |
| Potomac to Encinitas (California) | 2,257.76 mi (3,633.51 km) |
| Potomac to Endicott (New York) | 221.18 mi (355.95 km) |
| Potomac to Endwell (New York) | 223.13 mi (359.10 km) |
| Potomac to Englewood (Colorado) | 1,480.43 mi (2,382.52 km) |
| Potomac to Englewood (Florida) | 883.68 mi (1,422.15 km) |
| Potomac to Englewood (New Jersey) | 214.28 mi (344.86 km) |
| Potomac to Englewood (Ohio) | 383.95 mi (617.91 km) |
| Potomac to Enid (Oklahoma) | 1,141.87 mi (1,837.66 km) |
| Potomac to Ennis (Texas) | 1,181.93 mi (1,902.13 km) |
| Potomac to Ensley (Florida) | 818.20 mi (1,316.77 km) |
| Potomac to Enterprise (Alabama) | 720.98 mi (1,160.30 km) |
