| Rockville to Pontedera | 4,339.75 mi (6,984.16 km) |
| Rockville to Pontinia | 4,524.43 mi (7,281.36 km) |
| Rockville to Porcari | 4,332.99 mi (6,973.27 km) |
| Rockville to Porcia | 4,346.61 mi (6,995.19 km) |
| Rockville to Pordenone | 4,348.57 mi (6,998.35 km) |
| Rockville to Portici | 4,603.23 mi (7,408.18 km) |
| Rockville to Porto Empedocle | 4,698.20 mi (7,561.02 km) |
| Rockville to Porto Recanati | 4,479.06 mi (7,208.35 km) |
| Rockville to Porto Sant'Elpidio | 4,488.62 mi (7,223.74 km) |
| Rockville to Porto Tolle | 4,368.51 mi (7,030.43 km) |
| Rockville to Porto Torres | 4,336.14 mi (6,978.34 km) |
| Rockville to Portoferraio | 4,354.60 mi (7,008.05 km) |
| Rockville to Portogruaro | 4,361.91 mi (7,019.82 km) |
| Rockville to Portomaggiore | 4,354.99 mi (7,008.68 km) |
| Rockville to Potenza | 4,674.48 mi (7,522.85 km) |
