| Harpenden to Pandino | 632.40 mi (1,017.75 km) |
| Harpenden to Paola | 1,164.17 mi (1,873.54 km) |
| Harpenden to Parabiago | 604.88 mi (973.46 km) |
| Harpenden to Parabita | 1,197.88 mi (1,927.81 km) |
| Harpenden to Parma | 688.52 mi (1,108.06 km) |
| Harpenden to Partanna | 1,166.21 mi (1,876.84 km) |
| Harpenden to Partinico | 1,153.06 mi (1,855.67 km) |
| Harpenden to Pasian di Prato | 731.17 mi (1,176.70 km) |
| Harpenden to Paterno | 1,231.95 mi (1,982.62 km) |
| Harpenden to Patti | 1,200.55 mi (1,932.10 km) |
| Harpenden to Paullo | 626.69 mi (1,008.57 km) |
| Harpenden to Pavia | 631.01 mi (1,015.51 km) |
| Harpenden to Pavullo nel Frignano | 729.27 mi (1,173.64 km) |
| Harpenden to Pedara | 1,233.89 mi (1,985.76 km) |
| Harpenden to Pellezzano | 1,048.48 mi (1,687.36 km) |
