| Witham to Sestu | 954.03 mi (1,535.37 km) |
| Witham to Settimo Torinese | 563.97 mi (907.62 km) |
| Witham to Seveso | 574.53 mi (924.61 km) |
| Witham to Sezze | 921.40 mi (1,482.85 km) |
| Witham to Siano | 1,010.10 mi (1,625.60 km) |
| Witham to Siena | 767.73 mi (1,235.54 km) |
| Witham to Signa | 735.10 mi (1,183.03 km) |
| Witham to Silea | 678.73 mi (1,092.31 km) |
| Witham to Silvi Paese | 896.76 mi (1,443.19 km) |
| Witham to Sinalunga | 785.47 mi (1,264.10 km) |
| Witham to Siniscola | 886.77 mi (1,427.12 km) |
| Witham to Sinnai | 956.11 mi (1,538.71 km) |
| Witham to Siracusa | 1,243.15 mi (2,000.66 km) |
| Witham to Solaro | 574.42 mi (924.44 km) |
| Witham to Soliera | 678.30 mi (1,091.62 km) |
