| Boulogne-sur-Mer to Pontinia | 843.44 mi (1,357.38 km) |
| Boulogne-sur-Mer to Porcari | 634.93 mi (1,021.82 km) |
| Boulogne-sur-Mer to Porcia | 601.88 mi (968.63 km) |
| Boulogne-sur-Mer to Pordenone | 603.85 mi (971.81 km) |
| Boulogne-sur-Mer to Portici | 916.50 mi (1,474.97 km) |
| Boulogne-sur-Mer to Porto Empedocle | 1,097.72 mi (1,766.61 km) |
| Boulogne-sur-Mer to Porto Recanati | 756.88 mi (1,218.09 km) |
| Boulogne-sur-Mer to Porto Sant'Elpidio | 768.10 mi (1,236.14 km) |
| Boulogne-sur-Mer to Porto Tolle | 635.82 mi (1,023.25 km) |
| Boulogne-sur-Mer to Porto Torres | 756.75 mi (1,217.87 km) |
| Boulogne-sur-Mer to Portoferraio | 683.30 mi (1,099.66 km) |
| Boulogne-sur-Mer to Portogruaro | 617.85 mi (994.33 km) |
| Boulogne-sur-Mer to Portomaggiore | 629.52 mi (1,013.12 km) |
| Boulogne-sur-Mer to Potenza | 974.15 mi (1,567.74 km) |
| Boulogne-sur-Mer to Potenza Picena | 758.48 mi (1,220.65 km) |
