| Boulogne-sur-Mer to Schiltigheim | 310.83 mi (500.24 km) |
| Boulogne-sur-Mer to Scionzier | 393.95 mi (634.00 km) |
| Boulogne-sur-Mer to Seclin | 63.20 mi (101.71 km) |
| Boulogne-sur-Mer to Sedan | 163.17 mi (262.60 km) |
| Boulogne-sur-Mer to Selestat | 312.49 mi (502.90 km) |
| Boulogne-sur-Mer to Sene | 290.97 mi (468.27 km) |
| Boulogne-sur-Mer to Senlis | 113.51 mi (182.67 km) |
| Boulogne-sur-Mer to Sens | 190.18 mi (306.07 km) |
| Boulogne-sur-Mer to Septemes-les-Vallons | 536.04 mi (862.67 km) |
| Boulogne-sur-Mer to Serris | 139.36 mi (224.29 km) |
| Boulogne-sur-Mer to Sete | 515.19 mi (829.12 km) |
| Boulogne-sur-Mer to Sevran | 130.48 mi (209.98 km) |
| Boulogne-sur-Mer to Sevres | 134.12 mi (215.85 km) |
| Boulogne-sur-Mer to Seynod | 392.43 mi (631.55 km) |
| Boulogne-sur-Mer to Seysses | 499.63 mi (804.07 km) |
