| Potomac to Pandino | 4,239.98 mi (6,823.59 km) |
| Potomac to Paola | 4,737.29 mi (7,623.93 km) |
| Potomac to Parabiago | 4,209.06 mi (6,773.83 km) |
| Potomac to Parabita | 4,803.55 mi (7,730.56 km) |
| Potomac to Parma | 4,292.97 mi (6,908.87 km) |
| Potomac to Partanna | 4,656.80 mi (7,494.39 km) |
| Potomac to Partinico | 4,655.25 mi (7,491.90 km) |
| Potomac to Pasian di Prato | 4,372.79 mi (7,037.33 km) |
| Potomac to Paterno | 4,755.01 mi (7,652.45 km) |
| Potomac to Patti | 4,736.11 mi (7,622.04 km) |
| Potomac to Paullo | 4,233.01 mi (6,812.37 km) |
| Potomac to Pavia | 4,229.93 mi (6,807.42 km) |
| Potomac to Pavullo nel Frignano | 4,330.37 mi (6,969.06 km) |
| Potomac to Pedara | 4,760.69 mi (7,661.60 km) |
| Potomac to Pellezzano | 4,629.67 mi (7,450.74 km) |
