| Mercer Island to Poggibonsi | 5,536.61 mi (8,910.31 km) |
| Mercer Island to Poggio a Caiano | 5,513.57 mi (8,873.23 km) |
| Mercer Island to Poggio Renatico | 5,467.00 mi (8,798.28 km) |
| Mercer Island to Poggiomarino | 5,781.92 mi (9,305.10 km) |
| Mercer Island to Poirino | 5,366.43 mi (8,636.44 km) |
| Mercer Island to Policoro | 5,869.44 mi (9,445.96 km) |
| Mercer Island to Polistena | 5,966.31 mi (9,601.84 km) |
| Mercer Island to Pomezia | 5,678.58 mi (9,138.78 km) |
| Mercer Island to Pomigliano d'Arco | 5,771.14 mi (9,287.75 km) |
| Mercer Island to Pompei | 5,783.76 mi (9,308.07 km) |
| Mercer Island to Ponsacco | 5,514.69 mi (8,875.04 km) |
| Mercer Island to Pontassieve | 5,525.27 mi (8,892.05 km) |
| Mercer Island to Ponte Buggianese | 5,504.17 mi (8,858.10 km) |
| Mercer Island to Ponte San Pietro | 5,364.77 mi (8,633.76 km) |
| Mercer Island to Pontecorvo | 5,719.95 mi (9,205.37 km) |
