| Harpenden to Parczew | 989.61 mi (1,592.62 km) |
| Harpenden to Paslek | 844.86 mi (1,359.67 km) |
| Harpenden to Piaseczno | 907.05 mi (1,459.76 km) |
| Harpenden to Piastow | 899.04 mi (1,446.86 km) |
| Harpenden to Piekary Slaskie | 840.82 mi (1,353.16 km) |
| Harpenden to Pila | 723.02 mi (1,163.59 km) |
| Harpenden to Pinczow | 905.91 mi (1,457.92 km) |
| Harpenden to Pionki | 931.45 mi (1,499.03 km) |
| Harpenden to Piotrkow Trybunalski | 857.48 mi (1,379.99 km) |
| Harpenden to Pisz | 931.55 mi (1,499.19 km) |
| Harpenden to Pleszew | 772.04 mi (1,242.48 km) |
| Harpenden to Plewiska | 727.78 mi (1,171.25 km) |
| Harpenden to Plock | 848.25 mi (1,365.12 km) |
| Harpenden to Plonsk | 876.37 mi (1,410.39 km) |
| Harpenden to Pobiedziska | 755.61 mi (1,216.04 km) |
