| Idstein to Crest Hill (Illinois) | 4,340.77 mi (6,985.80 km) |
| Idstein to Crestview (Florida) | 4,818.10 mi (7,753.98 km) |
| Idstein to Crestwood (Illinois) | 4,323.46 mi (6,957.94 km) |
| Idstein to Crestwood (Missouri) | 4,573.15 mi (7,359.78 km) |
| Idstein to Creve Coeur (Missouri) | 4,570.32 mi (7,355.22 km) |
| Idstein to Crofton (Maryland) | 4,018.62 mi (6,467.34 km) |
| Idstein to Crossville (Tennessee) | 4,496.57 mi (7,236.53 km) |
| Idstein to Crowley (Louisiana) | 5,075.92 mi (8,168.90 km) |
| Idstein to Crowley (Texas) | 5,142.19 mi (8,275.56 km) |
| Idstein to Crown Point (Indiana) | 4,319.97 mi (6,952.32 km) |
| Idstein to Crystal (Minnesota) | 4,359.05 mi (7,015.21 km) |
| Idstein to Crystal Lake (Illinois) | 4,317.07 mi (6,947.66 km) |
| Idstein to Cudahy (California) | 5,766.13 mi (9,279.68 km) |
| Idstein to Cudahy (Wisconsin) | 4,265.60 mi (6,864.82 km) |
| Idstein to Cullman (Alabama) | 4,655.89 mi (7,492.94 km) |
