| Backnang to Santander | 736.13 mi (1,184.69 km) |
| Backnang to Santany | 732.08 mi (1,178.17 km) |
| Backnang to Santiago de Compostela | 957.28 mi (1,540.59 km) |
| Backnang to Santiago del Teide | 1,991.32 mi (3,204.72 km) |
| Backnang to Santiponce | 1,109.49 mi (1,785.55 km) |
| Backnang to Santomera | 915.41 mi (1,473.22 km) |
| Backnang to Santona | 722.88 mi (1,163.36 km) |
| Backnang to Santurce-Antiguo | 710.35 mi (1,143.20 km) |
| Backnang to Sarria | 912.84 mi (1,469.07 km) |
| Backnang to Sauzal | 1,967.30 mi (3,166.06 km) |
| Backnang to Sedavi | 816.53 mi (1,314.08 km) |
| Backnang to Segorbe | 795.25 mi (1,279.83 km) |
| Backnang to Segovia | 860.53 mi (1,384.89 km) |
| Backnang to Senmanat | 618.10 mi (994.73 km) |
| Backnang to Sesena | 887.35 mi (1,428.05 km) |
