| Petite-Synthe to Somma Lombardo | 469.80 mi (756.07 km) |
| Petite-Synthe to Somma Vesuviana | 908.04 mi (1,461.35 km) |
| Petite-Synthe to Sommacampagna | 550.70 mi (886.26 km) |
| Petite-Synthe to Sona | 548.45 mi (882.64 km) |
| Petite-Synthe to Sondrio | 479.59 mi (771.83 km) |
| Petite-Synthe to Sora | 835.83 mi (1,345.14 km) |
| Petite-Synthe to Sorbolo | 567.29 mi (912.96 km) |
| Petite-Synthe to Soresina | 525.52 mi (845.75 km) |
| Petite-Synthe to Sorisole | 495.22 mi (796.97 km) |
| Petite-Synthe to Sorrento | 919.99 mi (1,480.57 km) |
| Petite-Synthe to Sorso | 766.54 mi (1,233.63 km) |
| Petite-Synthe to Sortino | 1,142.08 mi (1,838.00 km) |
| Petite-Synthe to Soverato Marina | 1,096.28 mi (1,764.29 km) |
| Petite-Synthe to Sovicille | 677.28 mi (1,089.98 km) |
| Petite-Synthe to Spello | 736.53 mi (1,185.33 km) |
