| Boulogne-sur-Mer to Plombieres | 189.58 mi (305.09 km) |
| Boulogne-sur-Mer to Pont-a-Celles | 120.93 mi (194.62 km) |
| Boulogne-sur-Mer to Poperinge | 49.32 mi (79.38 km) |
| Boulogne-sur-Mer to Profondeville | 144.92 mi (233.23 km) |
| Boulogne-sur-Mer to Putte | 133.45 mi (214.76 km) |
| Boulogne-sur-Mer to Puurs | 118.63 mi (190.92 km) |
| Boulogne-sur-Mer to Quaregnon | 100.85 mi (162.31 km) |
| Boulogne-sur-Mer to Raeren | 196.99 mi (317.02 km) |
| Boulogne-sur-Mer to Ranst | 131.85 mi (212.19 km) |
| Boulogne-sur-Mer to Ravels | 153.55 mi (247.11 km) |
| Boulogne-sur-Mer to Retie | 154.67 mi (248.91 km) |
| Boulogne-sur-Mer to Riemst | 174.31 mi (280.52 km) |
| Boulogne-sur-Mer to Rijkevorsel | 143.55 mi (231.02 km) |
| Boulogne-sur-Mer to Rixensart | 127.66 mi (205.45 km) |
| Boulogne-sur-Mer to Rochefort | 163.11 mi (262.51 km) |
