| Gretna to Cehegin | 4,893.64 mi (7,875.55 km) |
| Gretna to Cervello | 4,983.44 mi (8,020.07 km) |
| Gretna to Cervera | 4,943.35 mi (7,955.56 km) |
| Gretna to Ceuti | 4,920.26 mi (7,918.39 km) |
| Gretna to Cheste | 4,910.40 mi (7,902.52 km) |
| Gretna to Chiclana de la Frontera | 4,717.46 mi (7,592.02 km) |
| Gretna to Chipiona | 4,694.75 mi (7,555.47 km) |
| Gretna to Chiva | 4,908.90 mi (7,900.11 km) |
| Gretna to Churriana de la Vega | 4,826.10 mi (7,766.86 km) |
| Gretna to Ciempozuelos | 4,748.66 mi (7,642.22 km) |
| Gretna to Cieza | 4,908.51 mi (7,899.49 km) |
| Gretna to Cisterniga | 4,660.30 mi (7,500.03 km) |
| Gretna to Ciudad de Melilla | 4,913.16 mi (7,906.96 km) |
| Gretna to Ciudad Real | 4,764.28 mi (7,667.37 km) |
| Gretna to Ciudad-Rodrigo | 4,594.27 mi (7,393.77 km) |
