| Backnang to Castle Rock (Colorado) | 5,137.67 mi (8,268.28 km) |
| Backnang to Castro Valley (California) | 5,754.16 mi (9,260.43 km) |
| Backnang to Catalina Foothills (Arizona) | 5,730.97 mi (9,223.11 km) |
| Backnang to Cataño (Puerto Rico) | 4,616.42 mi (7,429.41 km) |
| Backnang to Cathedral City (California) | 5,821.65 mi (9,369.04 km) |
| Backnang to Catonsville (Maryland) | 4,094.17 mi (6,588.93 km) |
| Backnang to Cave Spring (Virginia) | 4,320.23 mi (6,952.74 km) |
| Backnang to Cayce (South Carolina) | 4,517.35 mi (7,269.97 km) |
| Backnang to Cayey (Puerto Rico) | 4,633.38 mi (7,456.71 km) |
| Backnang to Cedar City (Utah) | 5,495.85 mi (8,844.71 km) |
| Backnang to Cedar Falls (Iowa) | 4,546.17 mi (7,316.35 km) |
| Backnang to Cedar Hill (Texas) | 5,218.43 mi (8,398.25 km) |
| Backnang to Cedar Lake (Indiana) | 4,417.26 mi (7,108.90 km) |
| Backnang to Cedar Mill (Oregon) | 5,303.80 mi (8,535.65 km) |
| Backnang to Cedar Park (Texas) | 5,360.33 mi (8,626.62 km) |
