| Welwyn Garden City to Seysses | 578.26 mi (930.62 km) |
| Welwyn Garden City to Sin-le-Noble | 174.71 mi (281.17 km) |
| Welwyn Garden City to Six-Fours-les-Plages | 663.30 mi (1,067.48 km) |
| Welwyn Garden City to Soissons | 227.67 mi (366.39 km) |
| Welwyn Garden City to Soisy-sous-Montmorency | 223.52 mi (359.72 km) |
| Welwyn Garden City to Sollies-Pont | 662.06 mi (1,065.48 km) |
| Welwyn Garden City to Somain | 180.94 mi (291.19 km) |
| Welwyn Garden City to Sorgues | 587.30 mi (945.16 km) |
| Welwyn Garden City to Sotteville-les-Rouen | 174.91 mi (281.48 km) |
| Welwyn Garden City to Soyaux | 426.39 mi (686.21 km) |
| Welwyn Garden City to Stains | 227.63 mi (366.34 km) |
| Welwyn Garden City to Stiring-Wendel | 360.87 mi (580.77 km) |
| Welwyn Garden City to Strasbourg | 415.46 mi (668.62 km) |
| Welwyn Garden City to Sucy-en-Brie | 241.61 mi (388.83 km) |
| Welwyn Garden City to Suresnes | 229.06 mi (368.63 km) |
