| Harpenden to Palencia | 705.03 mi (1,134.63 km) |
| Harpenden to Palleja | 726.61 mi (1,169.37 km) |
| Harpenden to Palma | 858.57 mi (1,381.73 km) |
| Harpenden to Palma del Rio | 1,004.38 mi (1,616.40 km) |
| Harpenden to Palomares del Rio | 1,039.61 mi (1,673.10 km) |
| Harpenden to Palos de la Frontera | 1,057.21 mi (1,701.42 km) |
| Harpenden to Pamplona | 624.83 mi (1,005.57 km) |
| Harpenden to Paracuellos de Jarama | 792.89 mi (1,276.03 km) |
| Harpenden to Parla | 816.55 mi (1,314.10 km) |
| Harpenden to Paterna | 850.87 mi (1,369.35 km) |
| Harpenden to Peligros | 1,020.28 mi (1,641.98 km) |
| Harpenden to Penarroya-Pueblonuevo | 963.71 mi (1,550.94 km) |
| Harpenden to Petrel | 921.86 mi (1,483.59 km) |
| Harpenden to Picana | 855.48 mi (1,376.76 km) |
| Harpenden to Picasent | 860.67 mi (1,385.11 km) |
