| Hemel Hempstead to Pontedera | 759.20 mi (1,221.81 km) |
| Hemel Hempstead to Pontinia | 957.50 mi (1,540.94 km) |
| Hemel Hempstead to Porcari | 749.07 mi (1,205.50 km) |
| Hemel Hempstead to Porcia | 715.05 mi (1,150.76 km) |
| Hemel Hempstead to Pordenone | 717.02 mi (1,153.93 km) |
| Hemel Hempstead to Portici | 1,030.88 mi (1,659.04 km) |
| Hemel Hempstead to Porto Empedocle | 1,209.24 mi (1,946.09 km) |
| Hemel Hempstead to Porto Recanati | 871.51 mi (1,402.56 km) |
| Hemel Hempstead to Porto Sant'Elpidio | 882.74 mi (1,420.64 km) |
| Hemel Hempstead to Porto Tolle | 750.23 mi (1,207.38 km) |
| Hemel Hempstead to Porto Torres | 863.51 mi (1,389.68 km) |
| Hemel Hempstead to Portoferraio | 796.25 mi (1,281.44 km) |
| Hemel Hempstead to Portogruaro | 731.12 mi (1,176.62 km) |
| Hemel Hempstead to Portomaggiore | 744.17 mi (1,197.62 km) |
| Hemel Hempstead to Potenza | 1,088.80 mi (1,752.26 km) |
