| Potomac to Poggibonsi | 4,373.45 mi (7,038.38 km) |
| Potomac to Poggio a Caiano | 4,357.91 mi (7,013.37 km) |
| Potomac to Poggio Renatico | 4,343.79 mi (6,990.66 km) |
| Potomac to Poggiomarino | 4,617.63 mi (7,431.35 km) |
| Potomac to Poirino | 4,181.74 mi (6,729.86 km) |
| Potomac to Policoro | 4,733.49 mi (7,617.81 km) |
| Potomac to Polistena | 4,775.86 mi (7,686.00 km) |
| Potomac to Pomezia | 4,495.54 mi (7,234.87 km) |
| Potomac to Pomigliano d'Arco | 4,606.69 mi (7,413.76 km) |
| Potomac to Pompei | 4,617.27 mi (7,430.77 km) |
| Potomac to Ponsacco | 4,345.82 mi (6,993.91 km) |
| Potomac to Pontassieve | 4,375.42 mi (7,041.56 km) |
| Potomac to Ponte Buggianese | 4,343.22 mi (6,989.74 km) |
| Potomac to Ponte San Pietro | 4,232.00 mi (6,810.75 km) |
| Potomac to Pontecorvo | 4,554.42 mi (7,329.63 km) |
