| Opfikon to Carlsbad (New Mexico) | 5,529.00 mi (8,898.06 km) |
| Opfikon to Carmel (Indiana) | 4,456.71 mi (7,172.39 km) |
| Opfikon to Carmichael (California) | 5,738.64 mi (9,235.45 km) |
| Opfikon to Carney (Maryland) | 4,089.34 mi (6,581.15 km) |
| Opfikon to Carnot-Moon (Pennsylvania) | 4,193.87 mi (6,749.38 km) |
| Opfikon to Carol Stream (Illinois) | 4,444.18 mi (7,152.21 km) |
| Opfikon to Carolina (Puerto Rico) | 4,573.88 mi (7,360.94 km) |
| Opfikon to Carolina Forest (South Carolina) | 4,440.93 mi (7,146.99 km) |
| Opfikon to Carpentersville (Illinois) | 4,440.84 mi (7,146.84 km) |
| Opfikon to Carpinteria (California) | 5,933.89 mi (9,549.68 km) |
| Opfikon to Carrboro (North Carolina) | 4,350.41 mi (7,001.32 km) |
| Opfikon to Carroll (Iowa) | 4,688.82 mi (7,545.92 km) |
| Opfikon to Carrollton (Georgia) | 4,711.64 mi (7,582.65 km) |
| Opfikon to Carrollton (Texas) | 5,219.35 mi (8,399.73 km) |
| Opfikon to Carrollwood (Florida) | 4,865.44 mi (7,830.17 km) |
