| Llantwit Major to Sabadell | 730.54 mi (1,175.69 km) |
| Llantwit Major to Sabinanigo | 631.20 mi (1,015.81 km) |
| Llantwit Major to Sagunto | 824.92 mi (1,327.57 km) |
| Llantwit Major to Salamanca | 728.89 mi (1,173.03 km) |
| Llantwit Major to Salobrena | 1,012.89 mi (1,630.09 km) |
| Llantwit Major to Salou | 746.30 mi (1,201.05 km) |
| Llantwit Major to Salt | 715.34 mi (1,151.23 km) |
| Llantwit Major to Salvatierra de Mino | 686.27 mi (1,104.44 km) |
| Llantwit Major to Sama | 569.47 mi (916.48 km) |
| Llantwit Major to San Adrian de Besos | 740.12 mi (1,191.11 km) |
| Llantwit Major to San Agustin de Guadalix | 741.27 mi (1,192.96 km) |
| Llantwit Major to San Andres de la Barca | 734.90 mi (1,182.71 km) |
| Llantwit Major to San Andres de Llevaneras | 735.52 mi (1,183.71 km) |
| Llantwit Major to San Andres del Rabanedo | 615.42 mi (990.42 km) |
| Llantwit Major to San Bartolome | 1,739.98 mi (2,800.22 km) |
