| Potomac to Palencia | 3,703.49 mi (5,960.19 km) |
| Potomac to Palleja | 4,026.83 mi (6,480.56 km) |
| Potomac to Palma | 4,115.38 mi (6,623.06 km) |
| Potomac to Palma del Rio | 3,789.15 mi (6,098.05 km) |
| Potomac to Palomares del Rio | 3,762.53 mi (6,055.20 km) |
| Potomac to Palos de la Frontera | 3,723.13 mi (5,991.80 km) |
| Potomac to Pamplona | 3,816.77 mi (6,142.50 km) |
| Potomac to Paracuellos de Jarama | 3,792.39 mi (6,103.27 km) |
| Potomac to Parla | 3,788.95 mi (6,097.72 km) |
| Potomac to Paterna | 3,970.44 mi (6,389.81 km) |
| Potomac to Peligros | 3,884.64 mi (6,251.72 km) |
| Potomac to Penarroya-Pueblonuevo | 3,772.31 mi (6,070.95 km) |
| Potomac to Petrel | 3,984.82 mi (6,412.95 km) |
| Potomac to Picana | 3,972.75 mi (6,393.52 km) |
| Potomac to Picasent | 3,973.85 mi (6,395.29 km) |
