| Hwlffordd to Solofra | 1,205.13 mi (1,939.46 km) |
| Hwlffordd to Somma Lombardo | 750.81 mi (1,208.31 km) |
| Hwlffordd to Somma Vesuviana | 1,188.13 mi (1,912.11 km) |
| Hwlffordd to Sommacampagna | 844.71 mi (1,359.44 km) |
| Hwlffordd to Sona | 842.68 mi (1,356.16 km) |
| Hwlffordd to Sondrio | 775.15 mi (1,247.49 km) |
| Hwlffordd to Sora | 1,116.69 mi (1,797.15 km) |
| Hwlffordd to Sorbolo | 853.21 mi (1,373.12 km) |
| Hwlffordd to Soresina | 811.60 mi (1,306.15 km) |
| Hwlffordd to Sorisole | 784.68 mi (1,262.82 km) |
| Hwlffordd to Sorrento | 1,198.06 mi (1,928.09 km) |
| Hwlffordd to Sorso | 994.73 mi (1,600.87 km) |
| Hwlffordd to Sortino | 1,403.23 mi (2,258.28 km) |
| Hwlffordd to Soverato Marina | 1,375.31 mi (2,213.34 km) |
| Hwlffordd to Sovicille | 954.22 mi (1,535.66 km) |
