| Mercer Island to Palencia | 5,173.05 mi (8,325.22 km) |
| Mercer Island to Palleja | 5,406.23 mi (8,700.49 km) |
| Mercer Island to Palma | 5,531.44 mi (8,901.99 km) |
| Mercer Island to Palma del Rio | 5,383.27 mi (8,663.54 km) |
| Mercer Island to Palomares del Rio | 5,378.17 mi (8,655.32 km) |
| Mercer Island to Palos de la Frontera | 5,354.07 mi (8,616.54 km) |
| Mercer Island to Pamplona | 5,218.87 mi (8,398.96 km) |
| Mercer Island to Paracuellos de Jarama | 5,285.45 mi (8,506.11 km) |
| Mercer Island to Parla | 5,294.34 mi (8,520.41 km) |
| Mercer Island to Paterna | 5,440.62 mi (8,755.82 km) |
| Mercer Island to Peligros | 5,463.97 mi (8,793.41 km) |
| Mercer Island to Penarroya-Pueblonuevo | 5,351.16 mi (8,611.86 km) |
| Mercer Island to Petrel | 5,486.79 mi (8,830.13 km) |
| Mercer Island to Picana | 5,444.53 mi (8,762.12 km) |
| Mercer Island to Picasent | 5,447.95 mi (8,767.63 km) |
