| Swindon to Sesimbra | 973.05 mi (1,565.98 km) |
| Swindon to Setubal | 964.17 mi (1,551.69 km) |
| Swindon to Sever do Vouga | 810.97 mi (1,305.14 km) |
| Swindon to Silves | 1,045.04 mi (1,681.83 km) |
| Swindon to Sines | 1,001.08 mi (1,611.07 km) |
| Swindon to Sintra | 955.13 mi (1,537.13 km) |
| Swindon to Sobrado de Paiva | 789.73 mi (1,270.96 km) |
| Swindon to Sobral de Monte Agraco | 936.58 mi (1,507.27 km) |
| Swindon to Soure | 860.12 mi (1,384.23 km) |
| Swindon to Tabua | 829.24 mi (1,334.53 km) |
| Swindon to Tavira | 1,038.39 mi (1,671.13 km) |
| Swindon to Tomar | 885.59 mi (1,425.22 km) |
| Swindon to Tondela | 819.97 mi (1,319.61 km) |
| Swindon to Torre de Moncorvo | 759.41 mi (1,222.15 km) |
| Swindon to Torres Novas | 896.32 mi (1,442.48 km) |
