| Welwyn Garden City to Selargius | 976.51 mi (1,571.53 km) |
| Welwyn Garden City to Selvazzano Dentro | 703.08 mi (1,131.51 km) |
| Welwyn Garden City to Senago | 603.90 mi (971.88 km) |
| Welwyn Garden City to Senigallia | 834.72 mi (1,343.35 km) |
| Welwyn Garden City to Seravezza | 722.57 mi (1,162.86 km) |
| Welwyn Garden City to Seregno | 602.58 mi (969.76 km) |
| Welwyn Garden City to Seriate | 617.70 mi (994.09 km) |
| Welwyn Garden City to Sermoneta | 941.73 mi (1,515.56 km) |
| Welwyn Garden City to Serramanna | 960.62 mi (1,545.96 km) |
| Welwyn Garden City to Serravalle Pistoiese | 746.58 mi (1,201.51 km) |
| Welwyn Garden City to Sessa Aurunca | 988.92 mi (1,591.52 km) |
| Welwyn Garden City to Sesto Calende | 580.26 mi (933.83 km) |
| Welwyn Garden City to Sesto Fiorentino | 761.74 mi (1,225.90 km) |
| Welwyn Garden City to Sesto San Giovanni | 609.69 mi (981.19 km) |
| Welwyn Garden City to Sestri Levante | 682.23 mi (1,097.94 km) |
