| Opfikon to Caguas (Puerto Rico) | 4,585.08 mi (7,378.97 km) |
| Opfikon to Cahokia (Illinois) | 4,680.83 mi (7,533.06 km) |
| Opfikon to Calabasas (California) | 5,923.13 mi (9,532.35 km) |
| Opfikon to Caldwell (Idaho) | 5,316.02 mi (8,555.30 km) |
| Opfikon to Caledonia (Wisconsin) | 4,394.08 mi (7,071.59 km) |
| Opfikon to Calera (Alabama) | 4,802.74 mi (7,729.26 km) |
| Opfikon to Calexico (California) | 5,905.94 mi (9,504.68 km) |
| Opfikon to Calhoun (Georgia) | 4,662.57 mi (7,503.69 km) |
| Opfikon to California (Maryland) | 4,135.85 mi (6,656.01 km) |
| Opfikon to California City (California) | 5,839.34 mi (9,397.51 km) |
| Opfikon to Callaway (Florida) | 4,896.78 mi (7,880.61 km) |
| Opfikon to Calumet City (Illinois) | 4,435.88 mi (7,138.86 km) |
| Opfikon to Calverton (Maryland) | 4,122.08 mi (6,633.85 km) |
| Opfikon to Camano (Washington) | 5,206.57 mi (8,379.16 km) |
| Opfikon to Camarillo (California) | 5,929.33 mi (9,542.34 km) |
