| Efringen-Kirchen to Cookeville (Tennessee) | 4,559.93 mi (7,338.50 km) |
| Efringen-Kirchen to Coolidge (Arizona) | 5,714.28 mi (9,196.25 km) |
| Efringen-Kirchen to Coon Rapids (Minnesota) | 4,438.39 mi (7,142.90 km) |
| Efringen-Kirchen to Cooper City (Florida) | 4,814.59 mi (7,748.33 km) |
| Efringen-Kirchen to Coos Bay (Oregon) | 5,496.60 mi (8,845.92 km) |
| Efringen-Kirchen to Copiague (New York) | 3,855.92 mi (6,205.50 km) |
| Efringen-Kirchen to Coppell (Texas) | 5,176.67 mi (8,331.04 km) |
| Efringen-Kirchen to Copperas Cove (Texas) | 5,307.47 mi (8,541.55 km) |
| Efringen-Kirchen to Coral Gables (Florida) | 4,830.43 mi (7,773.82 km) |
| Efringen-Kirchen to Coral Springs (Florida) | 4,802.62 mi (7,729.06 km) |
| Efringen-Kirchen to Coral Terrace (Florida) | 4,829.86 mi (7,772.91 km) |
| Efringen-Kirchen to Coralville (Iowa) | 4,539.13 mi (7,305.02 km) |
| Efringen-Kirchen to Coram (New York) | 3,831.02 mi (6,165.43 km) |
| Efringen-Kirchen to Corcoran (California) | 5,795.01 mi (9,326.16 km) |
| Efringen-Kirchen to Cordele (Georgia) | 4,684.39 mi (7,538.79 km) |
