| Backnang to Somma Lombardo | 228.04 mi (366.99 km) |
| Backnang to Somma Vesuviana | 608.93 mi (979.98 km) |
| Backnang to Sommacampagna | 253.93 mi (408.66 km) |
| Backnang to Sona | 251.50 mi (404.74 km) |
| Backnang to Sondrio | 192.94 mi (310.51 km) |
| Backnang to Sora | 539.11 mi (867.61 km) |
| Backnang to Sorbolo | 287.33 mi (462.41 km) |
| Backnang to Soresina | 253.67 mi (408.24 km) |
| Backnang to Sorisole | 221.97 mi (357.22 km) |
| Backnang to Sorrento | 623.44 mi (1,003.33 km) |
| Backnang to Sorso | 564.52 mi (908.50 km) |
| Backnang to Sortino | 861.04 mi (1,385.70 km) |
| Backnang to Soverato Marina | 792.14 mi (1,274.82 km) |
| Backnang to Sovicille | 400.66 mi (644.80 km) |
| Backnang to Spello | 439.97 mi (708.06 km) |
