| Opfikon to Clarkston (Georgia) | 4,665.41 mi (7,508.25 km) |
| Opfikon to Clarksville (Indiana) | 4,517.41 mi (7,270.07 km) |
| Opfikon to Clarksville (Tennessee) | 4,662.98 mi (7,504.33 km) |
| Opfikon to Clawson (Michigan) | 4,222.98 mi (6,796.23 km) |
| Opfikon to Clay (Alabama) | 4,769.79 mi (7,676.23 km) |
| Opfikon to Clayton (California) | 5,796.47 mi (9,328.52 km) |
| Opfikon to Clayton (Missouri) | 4,682.92 mi (7,536.43 km) |
| Opfikon to Clayton (North Carolina) | 4,335.26 mi (6,976.93 km) |
| Opfikon to Clayton (Ohio) | 4,388.81 mi (7,063.11 km) |
| Opfikon to Clearfield (Utah) | 5,320.87 mi (8,563.11 km) |
| Opfikon to Clearlake (California) | 5,755.73 mi (9,262.95 km) |
| Opfikon to Clearwater (Florida) | 4,880.06 mi (7,853.70 km) |
| Opfikon to Cleburne (Texas) | 5,271.84 mi (8,484.21 km) |
| Opfikon to Clemmons (North Carolina) | 4,400.55 mi (7,082.01 km) |
| Opfikon to Clemson (South Carolina) | 4,564.61 mi (7,346.03 km) |
