| Opfikon to Crest Hill (Illinois) | 4,459.42 mi (7,176.74 km) |
| Opfikon to Crestview (Florida) | 4,910.51 mi (7,902.70 km) |
| Opfikon to Crestwood (Illinois) | 4,441.70 mi (7,148.23 km) |
| Opfikon to Crestwood (Missouri) | 4,688.98 mi (7,546.18 km) |
| Opfikon to Creve Coeur (Missouri) | 4,686.47 mi (7,542.14 km) |
| Opfikon to Crofton (Maryland) | 4,112.67 mi (6,618.71 km) |
| Opfikon to Crossville (Tennessee) | 4,597.69 mi (7,399.26 km) |
| Opfikon to Crowley (Louisiana) | 5,178.34 mi (8,333.73 km) |
| Opfikon to Crowley (Texas) | 5,258.28 mi (8,462.38 km) |
| Opfikon to Crown Point (Indiana) | 4,437.11 mi (7,140.83 km) |
| Opfikon to Crystal (Minnesota) | 4,492.30 mi (7,229.66 km) |
| Opfikon to Crystal Lake (Illinois) | 4,437.48 mi (7,141.44 km) |
| Opfikon to Cudahy (California) | 5,918.18 mi (9,524.40 km) |
| Opfikon to Cudahy (Wisconsin) | 4,386.86 mi (7,059.97 km) |
| Opfikon to Cullman (Alabama) | 4,756.30 mi (7,654.53 km) |
