| Backnang to Cervello | 635.39 mi (1,022.57 km) |
| Backnang to Cervera | 639.75 mi (1,029.58 km) |
| Backnang to Ceuti | 920.77 mi (1,481.84 km) |
| Backnang to Cheste | 822.34 mi (1,323.42 km) |
| Backnang to Chiclana de la Frontera | 1,168.37 mi (1,880.31 km) |
| Backnang to Chipiona | 1,160.75 mi (1,868.04 km) |
| Backnang to Chiva | 823.87 mi (1,325.88 km) |
| Backnang to Churriana de la Vega | 1,045.97 mi (1,683.32 km) |
| Backnang to Ciempozuelos | 881.67 mi (1,418.92 km) |
| Backnang to Cieza | 915.67 mi (1,473.63 km) |
| Backnang to Cisterniga | 850.57 mi (1,368.86 km) |
| Backnang to Ciudad de Melilla | 1,134.23 mi (1,825.37 km) |
| Backnang to Ciudad Real | 953.57 mi (1,534.62 km) |
| Backnang to Ciudad-Rodrigo | 969.61 mi (1,560.43 km) |
| Backnang to Cocentaina | 857.94 mi (1,380.72 km) |
