| Houghton Regis to Pontedera | 768.09 mi (1,236.11 km) |
| Houghton Regis to Pontinia | 966.37 mi (1,555.23 km) |
| Houghton Regis to Porcari | 757.90 mi (1,219.72 km) |
| Houghton Regis to Porcia | 722.21 mi (1,162.28 km) |
| Houghton Regis to Pordenone | 724.18 mi (1,165.45 km) |
| Houghton Regis to Portici | 1,039.58 mi (1,673.04 km) |
| Houghton Regis to Porto Empedocle | 1,218.80 mi (1,961.47 km) |
| Houghton Regis to Porto Recanati | 879.56 mi (1,415.51 km) |
| Houghton Regis to Porto Sant'Elpidio | 890.83 mi (1,433.66 km) |
| Houghton Regis to Porto Tolle | 758.04 mi (1,219.95 km) |
| Houghton Regis to Porto Torres | 873.59 mi (1,405.91 km) |
| Houghton Regis to Portoferraio | 805.49 mi (1,296.31 km) |
| Houghton Regis to Portogruaro | 738.31 mi (1,188.20 km) |
| Houghton Regis to Portomaggiore | 752.27 mi (1,210.66 km) |
| Houghton Regis to Potenza | 1,097.18 mi (1,765.74 km) |
