| Backnang to Setubal | 1,158.97 mi (1,865.19 km) |
| Backnang to Sever do Vouga | 1,036.38 mi (1,667.89 km) |
| Backnang to Silves | 1,208.43 mi (1,944.78 km) |
| Backnang to Sines | 1,185.72 mi (1,908.23 km) |
| Backnang to Sintra | 1,165.18 mi (1,875.18 km) |
| Backnang to Sobrado de Paiva | 1,019.33 mi (1,640.45 km) |
| Backnang to Sobral de Monte Agraco | 1,145.58 mi (1,843.64 km) |
| Backnang to Soure | 1,077.45 mi (1,733.99 km) |
| Backnang to Tabua | 1,039.30 mi (1,672.59 km) |
| Backnang to Tavira | 1,183.26 mi (1,904.28 km) |
| Backnang to Tomar | 1,089.43 mi (1,753.27 km) |
| Backnang to Tondela | 1,034.47 mi (1,664.82 km) |
| Backnang to Torre de Moncorvo | 966.12 mi (1,554.83 km) |
| Backnang to Torres Novas | 1,100.23 mi (1,770.65 km) |
| Backnang to Torres Vedras | 1,147.05 mi (1,846.00 km) |
