| Mercer Island to Pontedera | 5,511.95 mi (8,870.62 km) |
| Mercer Island to Pontinia | 5,707.88 mi (9,185.94 km) |
| Mercer Island to Porcari | 5,500.84 mi (8,852.75 km) |
| Mercer Island to Porcia | 5,421.83 mi (8,725.59 km) |
| Mercer Island to Pordenone | 5,423.61 mi (8,728.46 km) |
| Mercer Island to Portici | 5,775.63 mi (9,294.98 km) |
| Mercer Island to Porto Empedocle | 5,970.25 mi (9,608.19 km) |
| Mercer Island to Porto Recanati | 5,600.07 mi (9,012.45 km) |
| Mercer Island to Porto Sant'Elpidio | 5,612.17 mi (9,031.92 km) |
| Mercer Island to Porto Tolle | 5,476.00 mi (8,812.77 km) |
| Mercer Island to Porto Torres | 5,621.61 mi (9,047.11 km) |
| Mercer Island to Portoferraio | 5,554.43 mi (8,939.00 km) |
| Mercer Island to Portogruaro | 5,437.97 mi (8,751.57 km) |
| Mercer Island to Portomaggiore | 5,478.60 mi (8,816.95 km) |
| Mercer Island to Potenza | 5,822.21 mi (9,369.94 km) |
