| Llantrisant to Solofra | 1,137.82 mi (1,831.15 km) |
| Llantrisant to Somma Lombardo | 682.78 mi (1,098.83 km) |
| Llantrisant to Somma Vesuviana | 1,121.09 mi (1,804.21 km) |
| Llantrisant to Sommacampagna | 775.58 mi (1,248.18 km) |
| Llantrisant to Sona | 773.52 mi (1,244.86 km) |
| Llantrisant to Sondrio | 705.77 mi (1,135.82 km) |
| Llantrisant to Sora | 1,049.45 mi (1,688.93 km) |
| Llantrisant to Sorbolo | 784.93 mi (1,263.22 km) |
| Llantrisant to Soresina | 743.21 mi (1,196.08 km) |
| Llantrisant to Sorisole | 715.88 mi (1,152.11 km) |
| Llantrisant to Sorrento | 1,131.29 mi (1,820.64 km) |
| Llantrisant to Sorso | 934.56 mi (1,504.02 km) |
| Llantrisant to Sortino | 1,339.13 mi (2,155.12 km) |
| Llantrisant to Soverato Marina | 1,308.62 mi (2,106.01 km) |
| Llantrisant to Sovicille | 887.18 mi (1,427.78 km) |
