| Llanelli to Sesimbra | 945.45 mi (1,521.55 km) |
| Llanelli to Setubal | 937.53 mi (1,508.82 km) |
| Llanelli to Sever do Vouga | 782.52 mi (1,259.35 km) |
| Llanelli to Silves | 1,023.17 mi (1,646.63 km) |
| Llanelli to Sines | 975.66 mi (1,570.17 km) |
| Llanelli to Sintra | 925.23 mi (1,489.01 km) |
| Llanelli to Sobrado de Paiva | 761.15 mi (1,224.95 km) |
| Llanelli to Sobral de Monte Agraco | 907.50 mi (1,460.47 km) |
| Llanelli to Soure | 831.70 mi (1,338.49 km) |
| Llanelli to Tabua | 803.78 mi (1,293.56 km) |
| Llanelli to Tavira | 1,020.81 mi (1,642.83 km) |
| Llanelli to Tomar | 859.45 mi (1,383.16 km) |
| Llanelli to Tondela | 793.81 mi (1,277.52 km) |
| Llanelli to Torre de Moncorvo | 737.88 mi (1,187.51 km) |
| Llanelli to Torres Novas | 869.78 mi (1,399.78 km) |
