| Llanelli to Sestu | 1,066.22 mi (1,715.92 km) |
| Llanelli to Settimo Torinese | 708.56 mi (1,140.32 km) |
| Llanelli to Seveso | 734.84 mi (1,182.61 km) |
| Llanelli to Sezze | 1,074.25 mi (1,728.83 km) |
| Llanelli to Siano | 1,167.46 mi (1,878.84 km) |
| Llanelli to Siena | 922.60 mi (1,484.78 km) |
| Llanelli to Signa | 892.05 mi (1,435.61 km) |
| Llanelli to Silea | 856.09 mi (1,377.74 km) |
| Llanelli to Silvi Paese | 1,061.42 mi (1,708.19 km) |
| Llanelli to Sinalunga | 942.02 mi (1,516.03 km) |
| Llanelli to Siniscola | 1,011.26 mi (1,627.47 km) |
| Llanelli to Sinnai | 1,069.23 mi (1,720.75 km) |
| Llanelli to Siracusa | 1,385.12 mi (2,229.14 km) |
| Llanelli to Solaro | 734.10 mi (1,181.41 km) |
| Llanelli to Soliera | 841.74 mi (1,354.65 km) |
