| Herndon to Palencia | 3,714.03 mi (5,977.16 km) |
| Herndon to Palleja | 4,037.30 mi (6,497.41 km) |
| Herndon to Palma | 4,125.92 mi (6,640.03 km) |
| Herndon to Palma del Rio | 3,799.85 mi (6,115.27 km) |
| Herndon to Palomares del Rio | 3,773.24 mi (6,072.45 km) |
| Herndon to Palos de la Frontera | 3,733.86 mi (6,009.06 km) |
| Herndon to Pamplona | 3,827.24 mi (6,159.35 km) |
| Herndon to Paracuellos de Jarama | 3,802.99 mi (6,120.32 km) |
| Herndon to Parla | 3,799.56 mi (6,114.80 km) |
| Herndon to Paterna | 3,981.03 mi (6,406.86 km) |
| Herndon to Peligros | 3,895.34 mi (6,268.94 km) |
| Herndon to Penarroya-Pueblonuevo | 3,783.00 mi (6,088.15 km) |
| Herndon to Petrel | 3,995.45 mi (6,430.05 km) |
| Herndon to Picana | 3,983.34 mi (6,410.57 km) |
| Herndon to Picasent | 3,984.44 mi (6,412.34 km) |
