| Gretna to Corato | 5,649.25 mi (9,091.58 km) |
| Gretna to Corbetta | 5,174.34 mi (8,327.30 km) |
| Gretna to Corciano | 5,397.87 mi (8,687.03 km) |
| Gretna to Cordenons | 5,317.36 mi (8,557.47 km) |
| Gretna to Cori | 5,477.63 mi (8,815.39 km) |
| Gretna to Coriano | 5,382.71 mi (8,662.64 km) |
| Gretna to Corigliano Calabro | 5,712.71 mi (9,193.71 km) |
| Gretna to Corleone | 5,631.91 mi (9,063.69 km) |
| Gretna to Cormano | 5,182.40 mi (8,340.27 km) |
| Gretna to Cornaredo | 5,178.28 mi (8,333.64 km) |
| Gretna to Cornate d'Adda | 5,192.02 mi (8,355.76 km) |
| Gretna to Cornedo Vicentino | 5,273.14 mi (8,486.31 km) |
| Gretna to Correggio | 5,277.23 mi (8,492.88 km) |
| Gretna to Corridonia | 5,447.35 mi (8,766.66 km) |
| Gretna to Corsico | 5,184.00 mi (8,342.84 km) |
