| Portsmouth to Pandino | 615.76 mi (990.97 km) |
| Portsmouth to Paola | 1,144.67 mi (1,842.17 km) |
| Portsmouth to Parabiago | 586.65 mi (944.13 km) |
| Portsmouth to Parabita | 1,185.88 mi (1,908.49 km) |
| Portsmouth to Parma | 671.60 mi (1,080.83 km) |
| Portsmouth to Partanna | 1,133.75 mi (1,824.59 km) |
| Portsmouth to Partinico | 1,121.97 mi (1,805.63 km) |
| Portsmouth to Pasian di Prato | 731.17 mi (1,176.71 km) |
| Portsmouth to Paterno | 1,204.75 mi (1,938.86 km) |
| Portsmouth to Patti | 1,174.89 mi (1,890.80 km) |
| Portsmouth to Paullo | 609.53 mi (980.95 km) |
| Portsmouth to Pavia | 611.47 mi (984.06 km) |
| Portsmouth to Pavullo nel Frignano | 711.83 mi (1,145.59 km) |
| Portsmouth to Pedara | 1,207.27 mi (1,942.91 km) |
| Portsmouth to Pellezzano | 1,029.55 mi (1,656.91 km) |
