| Idar-Oberstein to Coldwater (Michigan) | 4,188.98 mi (6,741.52 km) |
| Idar-Oberstein to Colesville (Maryland) | 4,004.53 mi (6,444.68 km) |
| Idar-Oberstein to College (Alaska) | 4,408.47 mi (7,094.75 km) |
| Idar-Oberstein to College Park (Georgia) | 4,564.08 mi (7,345.17 km) |
| Idar-Oberstein to College Park (Maryland) | 4,005.26 mi (6,445.84 km) |
| Idar-Oberstein to College Station (Texas) | 5,188.86 mi (8,350.67 km) |
| Idar-Oberstein to Collegedale (Tennessee) | 4,518.70 mi (7,272.15 km) |
| Idar-Oberstein to Colleyville (Texas) | 5,100.56 mi (8,208.56 km) |
| Idar-Oberstein to Collierville (Tennessee) | 4,703.45 mi (7,569.47 km) |
| Idar-Oberstein to Collinsville (Illinois) | 4,535.67 mi (7,299.45 km) |
| Idar-Oberstein to Colonia (New Jersey) | 3,827.84 mi (6,160.32 km) |
| Idar-Oberstein to Colonial Heights (Virginia) | 4,102.85 mi (6,602.90 km) |
| Idar-Oberstein to Colonial Park (Pennsylvania) | 3,941.90 mi (6,343.87 km) |
| Idar-Oberstein to Colorado Springs (Colorado) | 5,055.83 mi (8,136.57 km) |
| Idar-Oberstein to Colton (California) | 5,731.72 mi (9,224.32 km) |
