| Opfikon to Cicero (Illinois) | 4,433.31 mi (7,134.72 km) |
| Opfikon to Cimarron Hills (Colorado) | 5,201.65 mi (8,371.24 km) |
| Opfikon to Cincinnati (Ohio) | 4,428.99 mi (7,127.78 km) |
| Opfikon to Cinco Ranch (Texas) | 5,340.31 mi (8,594.40 km) |
| Opfikon to Circleville (Ohio) | 4,344.50 mi (6,991.79 km) |
| Opfikon to Citrus (California) | 5,900.16 mi (9,495.39 km) |
| Opfikon to Citrus Heights (California) | 5,733.85 mi (9,227.74 km) |
| Opfikon to Citrus Park (Florida) | 4,866.81 mi (7,832.37 km) |
| Opfikon to Claiborne (Louisiana) | 5,055.23 mi (8,135.60 km) |
| Opfikon to Claremont (California) | 5,894.15 mi (9,485.72 km) |
| Opfikon to Claremont (New Hampshire) | 3,751.64 mi (6,037.68 km) |
| Opfikon to Claremore (Oklahoma) | 5,001.09 mi (8,048.48 km) |
| Opfikon to Clarksburg (Maryland) | 4,128.16 mi (6,643.63 km) |
| Opfikon to Clarksburg (West Virginia) | 4,252.27 mi (6,843.37 km) |
| Opfikon to Clarksdale (Mississippi) | 4,907.76 mi (7,898.28 km) |
