| Potomac to Elkhart (Indiana) | 497.08 mi (799.97 km) |
| Potomac to Elkhorn (Wisconsin) | 643.83 mi (1,036.15 km) |
| Potomac to Elko (Nevada) | 2,031.20 mi (3,268.90 km) |
| Potomac to Elkridge (Maryland) | 27.22 mi (43.80 km) |
| Potomac to Elkton (Maryland) | 84.06 mi (135.28 km) |
| Potomac to Ellensburg (Washington) | 2,228.39 mi (3,586.25 km) |
| Potomac to Ellicott City (Maryland) | 26.51 mi (42.66 km) |
| Potomac to Elmhurst (Illinois) | 598.68 mi (963.49 km) |
| Potomac to Elmira (New York) | 213.74 mi (343.98 km) |
| Potomac to Elmont (New York) | 218.64 mi (351.87 km) |
| Potomac to Elmwood Park (Illinois) | 592.90 mi (954.18 km) |
| Potomac to Elmwood Park (New Jersey) | 208.72 mi (335.90 km) |
| Potomac to Elon (North Carolina) | 237.81 mi (382.72 km) |
| Potomac to Eloy (Arizona) | 1,961.79 mi (3,157.20 km) |
| Potomac to Elwood (New York) | 240.28 mi (386.69 km) |
