| Potomac to Erba | 4,212.33 mi (6,779.10 km) |
| Potomac to Erchie | 4,771.22 mi (7,678.53 km) |
| Potomac to Ercolano | 4,608.79 mi (7,417.12 km) |
| Potomac to Erice | 4,631.42 mi (7,453.54 km) |
| Potomac to Este | 4,335.86 mi (6,977.89 km) |
| Potomac to Fabriano | 4,454.80 mi (7,169.31 km) |
| Potomac to Faenza | 4,377.23 mi (7,044.47 km) |
| Potomac to Fagnano Olona | 4,202.13 mi (6,762.68 km) |
| Potomac to Fano | 4,441.59 mi (7,148.04 km) |
| Potomac to Fara in Sabina | 4,486.26 mi (7,219.93 km) |
| Potomac to Farra di Soligo | 4,333.06 mi (6,973.39 km) |
| Potomac to Fasano | 4,739.85 mi (7,628.06 km) |
| Potomac to Favara | 4,707.79 mi (7,576.46 km) |
| Potomac to Felino | 4,292.84 mi (6,908.65 km) |
| Potomac to Feltre | 4,319.85 mi (6,952.12 km) |
