| Potomac to Potenza Picena | 4,483.85 mi (7,216.06 km) |
| Potomac to Pozzallo | 4,784.67 mi (7,700.18 km) |
| Potomac to Pozzuoli | 4,597.86 mi (7,399.53 km) |
| Potomac to Prato | 4,357.03 mi (7,011.96 km) |
| Potomac to Preganziol | 4,347.50 mi (6,996.63 km) |
| Potomac to Priolo Gargallo | 4,783.30 mi (7,697.98 km) |
| Potomac to Priverno | 4,532.91 mi (7,295.01 km) |
| Potomac to Pulsano | 4,756.41 mi (7,654.71 km) |
| Potomac to Putignano | 4,728.34 mi (7,609.52 km) |
| Potomac to Qualiano | 4,595.65 mi (7,395.98 km) |
| Potomac to Quarrata | 4,353.24 mi (7,005.86 km) |
| Potomac to Quartu Sant'Elena | 4,431.37 mi (7,131.61 km) |
| Potomac to Quartucciu | 4,430.61 mi (7,130.38 km) |
| Potomac to Quattro Castella | 4,304.52 mi (6,927.46 km) |
| Potomac to Quinto di Treviso | 4,343.01 mi (6,989.40 km) |
