| Alloa to Sesimbra | 1,245.21 mi (2,003.97 km) |
| Alloa to Setubal | 1,237.88 mi (1,992.18 km) |
| Alloa to Sever do Vouga | 1,082.74 mi (1,742.50 km) |
| Alloa to Silves | 1,325.57 mi (2,133.30 km) |
| Alloa to Sines | 1,276.50 mi (2,054.33 km) |
| Alloa to Sintra | 1,223.71 mi (1,969.37 km) |
| Alloa to Sobrado de Paiva | 1,061.43 mi (1,708.21 km) |
| Alloa to Sobral de Monte Agraco | 1,206.59 mi (1,941.82 km) |
| Alloa to Soure | 1,131.62 mi (1,821.17 km) |
| Alloa to Tabua | 1,105.41 mi (1,778.98 km) |
| Alloa to Tavira | 1,324.91 mi (2,132.24 km) |
| Alloa to Tomar | 1,160.45 mi (1,867.57 km) |
| Alloa to Tondela | 1,095.16 mi (1,762.48 km) |
| Alloa to Torre de Moncorvo | 1,041.50 mi (1,676.13 km) |
| Alloa to Torres Novas | 1,170.52 mi (1,883.78 km) |
