| Boulogne-sur-Mer to Savona | 546.59 mi (879.66 km) |
| Boulogne-sur-Mer to Scafati | 925.99 mi (1,490.24 km) |
| Boulogne-sur-Mer to Scalea | 1,018.27 mi (1,638.75 km) |
| Boulogne-sur-Mer to Scandiano | 597.42 mi (961.45 km) |
| Boulogne-sur-Mer to Scandicci | 657.57 mi (1,058.26 km) |
| Boulogne-sur-Mer to Schio | 565.94 mi (910.80 km) |
| Boulogne-sur-Mer to Sciacca | 1,073.25 mi (1,727.23 km) |
| Boulogne-sur-Mer to Scicli | 1,159.65 mi (1,866.27 km) |
| Boulogne-sur-Mer to Scordia | 1,133.42 mi (1,824.06 km) |
| Boulogne-sur-Mer to Scorze | 599.80 mi (965.28 km) |
| Boulogne-sur-Mer to Sedico | 575.88 mi (926.79 km) |
| Boulogne-sur-Mer to Sedriano | 495.81 mi (797.93 km) |
| Boulogne-sur-Mer to Segni | 827.36 mi (1,331.50 km) |
| Boulogne-sur-Mer to Segrate | 505.91 mi (814.18 km) |
| Boulogne-sur-Mer to Selargius | 873.15 mi (1,405.20 km) |
