| Gravelines to Pontinia | 841.07 mi (1,353.57 km) |
| Gravelines to Porcari | 632.57 mi (1,018.02 km) |
| Gravelines to Porcia | 591.64 mi (952.16 km) |
| Gravelines to Pordenone | 593.61 mi (955.33 km) |
| Gravelines to Portici | 913.13 mi (1,469.54 km) |
| Gravelines to Porto Empedocle | 1,099.14 mi (1,768.90 km) |
| Gravelines to Porto Recanati | 750.48 mi (1,207.78 km) |
| Gravelines to Porto Sant'Elpidio | 761.87 mi (1,226.11 km) |
| Gravelines to Porto Tolle | 628.37 mi (1,011.26 km) |
| Gravelines to Porto Torres | 762.68 mi (1,227.42 km) |
| Gravelines to Portoferraio | 683.25 mi (1,099.58 km) |
| Gravelines to Portogruaro | 607.77 mi (978.10 km) |
| Gravelines to Portomaggiore | 623.41 mi (1,003.29 km) |
| Gravelines to Potenza | 969.18 mi (1,559.74 km) |
| Gravelines to Potenza Picena | 752.25 mi (1,210.63 km) |
