| Opfikon to Culpeper (Virginia) | 4,191.64 mi (6,745.80 km) |
| Opfikon to Culver City (California) | 5,922.35 mi (9,531.11 km) |
| Opfikon to Cumberland (Maryland) | 4,171.73 mi (6,713.75 km) |
| Opfikon to Cupertino (California) | 5,836.66 mi (9,393.19 km) |
| Opfikon to Cutler Bay (Florida) | 4,888.55 mi (7,867.36 km) |
| Opfikon to Cutlerville (Michigan) | 4,307.79 mi (6,932.72 km) |
| Opfikon to Cuyahoga Falls (Ohio) | 4,218.38 mi (6,788.83 km) |
| Opfikon to Cypress (California) | 5,922.14 mi (9,530.77 km) |
| Opfikon to Cypress Gardens (Florida) | 4,831.68 mi (7,775.84 km) |
| Opfikon to Cypress Lake (Florida) | 4,911.59 mi (7,904.44 km) |
| Opfikon to D'Iberville (Mississippi) | 5,021.73 mi (8,081.70 km) |
| Opfikon to Dakota Ridge (Colorado) | 5,176.35 mi (8,330.54 km) |
| Opfikon to Dale City (Virginia) | 4,156.50 mi (6,689.24 km) |
| Opfikon to Dallas (Georgia) | 4,685.72 mi (7,540.93 km) |
| Opfikon to Dallas (Oregon) | 5,419.97 mi (8,722.59 km) |
