| Boo to Sesimbra | 1,876.90 mi (3,020.59 km) |
| Boo to Setubal | 1,866.38 mi (3,003.65 km) |
| Boo to Sever do Vouga | 1,721.94 mi (2,771.20 km) |
| Boo to Silves | 1,934.00 mi (3,112.47 km) |
| Boo to Sines | 1,899.50 mi (3,056.95 km) |
| Boo to Sintra | 1,863.96 mi (2,999.75 km) |
| Boo to Sobrado de Paiva | 1,701.71 mi (2,738.65 km) |
| Boo to Sobral de Monte Agraco | 1,844.43 mi (2,968.32 km) |
| Boo to Soure | 1,769.29 mi (2,847.39 km) |
| Boo to Tabua | 1,734.15 mi (2,790.84 km) |
| Boo to Tavira | 1,917.24 mi (3,085.50 km) |
| Boo to Tomar | 1,789.59 mi (2,880.06 km) |
| Boo to Tondela | 1,726.53 mi (2,778.59 km) |
| Boo to Torre de Moncorvo | 1,660.06 mi (2,671.60 km) |
| Boo to Torres Novas | 1,800.69 mi (2,897.93 km) |
