| Potomac to Piazza Armerina | 4,737.64 mi (7,624.49 km) |
| Potomac to Piazzola sul Brenta | 4,330.03 mi (6,968.51 km) |
| Potomac to Pietrasanta | 4,316.69 mi (6,947.04 km) |
| Potomac to Pieve di Soligo | 4,335.16 mi (6,976.77 km) |
| Potomac to Pinerolo | 4,160.36 mi (6,695.45 km) |
| Potomac to Pioltello | 4,227.47 mi (6,803.45 km) |
| Potomac to Piombino | 4,364.08 mi (7,023.30 km) |
| Potomac to Piombino Dese | 4,337.34 mi (6,980.28 km) |
| Potomac to Piossasco | 4,162.86 mi (6,699.48 km) |
| Potomac to Piove di Sacco | 4,349.40 mi (6,999.68 km) |
| Potomac to Pisa | 4,332.27 mi (6,972.11 km) |
| Potomac to Pisticci | 4,721.36 mi (7,598.30 km) |
| Potomac to Pistoia | 4,347.45 mi (6,996.54 km) |
| Potomac to Pizzo | 4,767.52 mi (7,672.58 km) |
| Potomac to Podenzano | 4,260.33 mi (6,856.33 km) |
