| Opelika to Caldicot | 4,191.17 mi (6,745.04 km) |
| Opelika to Calne | 4,224.86 mi (6,799.26 km) |
| Opelika to Cam | 4,204.77 mi (6,766.93 km) |
| Opelika to Camberley | 4,278.90 mi (6,886.22 km) |
| Opelika to Camborne | 4,111.05 mi (6,616.10 km) |
| Opelika to Cambridge | 4,295.00 mi (6,912.13 km) |
| Opelika to Cambuslang | 4,059.43 mi (6,533.03 km) |
| Opelika to Canford Cliffs | 4,243.32 mi (6,828.96 km) |
| Opelika to Cannock | 4,198.72 mi (6,757.19 km) |
| Opelika to Canterbury | 4,354.61 mi (7,008.06 km) |
| Opelika to Carlisle | 4,121.58 mi (6,633.05 km) |
| Opelika to Carlton Colville | 4,352.26 mi (7,004.29 km) |
| Opelika to Carluke | 4,073.39 mi (6,555.49 km) |
| Opelika to Carnoustie | 4,102.79 mi (6,602.80 km) |
| Opelika to Carshalton | 4,301.76 mi (6,923.02 km) |
