| Llantwit Major to Solofra | 1,136.30 mi (1,828.69 km) |
| Llantwit Major to Somma Lombardo | 681.61 mi (1,096.95 km) |
| Llantwit Major to Somma Vesuviana | 1,119.44 mi (1,801.56 km) |
| Llantwit Major to Sommacampagna | 775.13 mi (1,247.45 km) |
| Llantwit Major to Sona | 773.08 mi (1,244.16 km) |
| Llantwit Major to Sondrio | 705.51 mi (1,135.41 km) |
| Llantwit Major to Sora | 1,047.90 mi (1,686.43 km) |
| Llantwit Major to Sorbolo | 783.91 mi (1,261.59 km) |
| Llantwit Major to Soresina | 742.26 mi (1,194.55 km) |
| Llantwit Major to Sorisole | 715.19 mi (1,150.99 km) |
| Llantwit Major to Sorrento | 1,129.52 mi (1,817.78 km) |
| Llantwit Major to Sorso | 930.53 mi (1,497.55 km) |
| Llantwit Major to Sortino | 1,336.32 mi (2,150.60 km) |
| Llantwit Major to Soverato Marina | 1,306.81 mi (2,103.11 km) |
| Llantwit Major to Sovicille | 885.51 mi (1,425.10 km) |
