| Smethwick to Sestu | 1,052.69 mi (1,694.15 km) |
| Smethwick to Settimo Torinese | 673.20 mi (1,083.40 km) |
| Smethwick to Seveso | 689.04 mi (1,108.90 km) |
| Smethwick to Sezze | 1,034.66 mi (1,665.13 km) |
| Smethwick to Siano | 1,124.85 mi (1,810.27 km) |
| Smethwick to Siena | 881.24 mi (1,418.22 km) |
| Smethwick to Signa | 849.15 mi (1,366.57 km) |
| Smethwick to Silea | 797.77 mi (1,283.89 km) |
| Smethwick to Silvi Paese | 1,013.30 mi (1,630.75 km) |
| Smethwick to Sinalunga | 899.54 mi (1,447.67 km) |
| Smethwick to Siniscola | 990.05 mi (1,593.33 km) |
| Smethwick to Sinnai | 1,055.15 mi (1,698.10 km) |
| Smethwick to Siracusa | 1,353.52 mi (2,178.28 km) |
| Smethwick to Solaro | 688.74 mi (1,108.42 km) |
| Smethwick to Soliera | 794.07 mi (1,277.93 km) |
