| Mercer Island to Pandino | 5,381.46 mi (8,660.62 km) |
| Mercer Island to Paola | 5,905.86 mi (9,504.56 km) |
| Mercer Island to Parabiago | 5,357.00 mi (8,621.26 km) |
| Mercer Island to Parabita | 5,912.74 mi (9,515.63 km) |
| Mercer Island to Parma | 5,436.39 mi (8,749.02 km) |
| Mercer Island to Partanna | 5,927.24 mi (9,538.97 km) |
| Mercer Island to Partinico | 5,913.64 mi (9,517.08 km) |
| Mercer Island to Pasian di Prato | 5,430.39 mi (8,739.37 km) |
| Mercer Island to Paterno | 5,988.69 mi (9,637.86 km) |
| Mercer Island to Patti | 5,955.20 mi (9,583.97 km) |
| Mercer Island to Paullo | 5,376.72 mi (8,653.00 km) |
| Mercer Island to Pavia | 5,384.26 mi (8,665.12 km) |
| Mercer Island to Pavullo nel Frignano | 5,476.90 mi (8,814.22 km) |
| Mercer Island to Pedara | 5,989.81 mi (9,639.66 km) |
| Mercer Island to Pellezzano | 5,791.26 mi (9,320.14 km) |
