| Pen-y-Bont ar Ogwr to Solofra | 1,143.82 mi (1,840.81 km) |
| Pen-y-Bont ar Ogwr to Somma Lombardo | 689.01 mi (1,108.85 km) |
| Pen-y-Bont ar Ogwr to Somma Vesuviana | 1,127.01 mi (1,813.74 km) |
| Pen-y-Bont ar Ogwr to Sommacampagna | 782.25 mi (1,258.91 km) |
| Pen-y-Bont ar Ogwr to Sona | 780.20 mi (1,255.61 km) |
| Pen-y-Bont ar Ogwr to Sondrio | 712.55 mi (1,146.74 km) |
| Pen-y-Bont ar Ogwr to Sora | 1,055.43 mi (1,698.56 km) |
| Pen-y-Bont ar Ogwr to Sorbolo | 791.26 mi (1,273.40 km) |
| Pen-y-Bont ar Ogwr to Soresina | 749.58 mi (1,206.33 km) |
| Pen-y-Bont ar Ogwr to Sorisole | 722.41 mi (1,162.60 km) |
| Pen-y-Bont ar Ogwr to Sorrento | 1,137.13 mi (1,830.03 km) |
| Pen-y-Bont ar Ogwr to Sorso | 938.68 mi (1,510.66 km) |
| Pen-y-Bont ar Ogwr to Sortino | 1,344.22 mi (2,163.32 km) |
| Pen-y-Bont ar Ogwr to Soverato Marina | 1,314.43 mi (2,115.37 km) |
| Pen-y-Bont ar Ogwr to Sovicille | 893.09 mi (1,437.28 km) |
