| Duffel to Sin-le-Noble | 79.75 mi (128.34 km) |
| Duffel to Six-Fours-les-Plages | 556.05 mi (894.87 km) |
| Duffel to Soissons | 129.90 mi (209.05 km) |
| Duffel to Soisy-sous-Montmorency | 175.98 mi (283.21 km) |
| Duffel to Sollies-Pont | 551.17 mi (887.02 km) |
| Duffel to Somain | 74.54 mi (119.95 km) |
| Duffel to Sorgues | 490.27 mi (789.01 km) |
| Duffel to Sotteville-les-Rouen | 191.18 mi (307.68 km) |
| Duffel to Soyaux | 425.96 mi (685.52 km) |
| Duffel to Stains | 176.15 mi (283.49 km) |
| Duffel to Stiring-Wendel | 169.22 mi (272.33 km) |
| Duffel to Strasbourg | 225.65 mi (363.15 km) |
| Duffel to Sucy-en-Brie | 183.79 mi (295.79 km) |
| Duffel to Suresnes | 184.78 mi (297.37 km) |
| Duffel to Talant | 260.97 mi (419.99 km) |
