| Boulogne-sur-Mer to Sala Consilina | 980.04 mi (1,577.21 km) |
| Boulogne-sur-Mer to Salemi | 1,047.07 mi (1,685.10 km) |
| Boulogne-sur-Mer to Salerno | 937.49 mi (1,508.75 km) |
| Boulogne-sur-Mer to Salo | 541.92 mi (872.13 km) |
| Boulogne-sur-Mer to Salsomaggiore Terme | 562.99 mi (906.04 km) |
| Boulogne-sur-Mer to Saluzzo | 500.87 mi (806.08 km) |
| Boulogne-sur-Mer to Salzano | 601.81 mi (968.52 km) |
| Boulogne-sur-Mer to Samarate | 483.04 mi (777.38 km) |
| Boulogne-sur-Mer to San Benedetto del Tronto | 788.65 mi (1,269.21 km) |
| Boulogne-sur-Mer to San Biagio di Callalta | 604.89 mi (973.48 km) |
| Boulogne-sur-Mer to San Bonifacio | 577.77 mi (929.83 km) |
| Boulogne-sur-Mer to San Casciano in Val di Pesa | 662.67 mi (1,066.46 km) |
| Boulogne-sur-Mer to San Cataldo | 1,098.49 mi (1,767.85 km) |
| Boulogne-sur-Mer to San Cesareo | 813.27 mi (1,308.83 km) |
| Boulogne-sur-Mer to San Dona di Piave | 614.22 mi (988.49 km) |
