| Seclin to Sin-le-Noble | 13.32 mi (21.43 km) |
| Seclin to Six-Fours-les-Plages | 531.11 mi (854.73 km) |
| Seclin to Soissons | 81.66 mi (131.42 km) |
| Seclin to Soisy-sous-Montmorency | 112.63 mi (181.26 km) |
| Seclin to Sollies-Pont | 527.82 mi (849.44 km) |
| Seclin to Somain | 17.19 mi (27.67 km) |
| Seclin to Sorgues | 460.02 mi (740.32 km) |
| Seclin to Sotteville-les-Rouen | 116.70 mi (187.81 km) |
| Seclin to Soyaux | 363.34 mi (584.75 km) |
| Seclin to Stains | 114.14 mi (183.68 km) |
| Seclin to Stiring-Wendel | 197.03 mi (317.08 km) |
| Seclin to Strasbourg | 251.13 mi (404.15 km) |
| Seclin to Sucy-en-Brie | 124.96 mi (201.10 km) |
| Seclin to Suresnes | 121.47 mi (195.48 km) |
| Seclin to Talant | 239.33 mi (385.17 km) |
