| Cwmbran to Sestu | 1,032.86 mi (1,662.23 km) |
| Cwmbran to Settimo Torinese | 667.98 mi (1,075.01 km) |
| Cwmbran to Seveso | 691.68 mi (1,113.15 km) |
| Cwmbran to Sezze | 1,033.07 mi (1,662.56 km) |
| Cwmbran to Siano | 1,125.57 mi (1,811.43 km) |
| Cwmbran to Siena | 880.80 mi (1,417.51 km) |
| Cwmbran to Signa | 849.82 mi (1,367.65 km) |
| Cwmbran to Silea | 810.41 mi (1,304.22 km) |
| Cwmbran to Silvi Paese | 1,018.10 mi (1,638.47 km) |
| Cwmbran to Sinalunga | 899.96 mi (1,448.34 km) |
| Cwmbran to Siniscola | 975.33 mi (1,569.64 km) |
| Cwmbran to Sinnai | 1,035.68 mi (1,666.77 km) |
| Cwmbran to Siracusa | 1,346.38 mi (2,166.78 km) |
| Cwmbran to Solaro | 691.04 mi (1,112.12 km) |
| Cwmbran to Soliera | 798.30 mi (1,284.74 km) |
