| Gretna to Campo de Criptana | 4,793.06 mi (7,713.68 km) |
| Gretna to Campos del Puerto | 5,091.46 mi (8,193.91 km) |
| Gretna to Canals | 4,929.68 mi (7,933.55 km) |
| Gretna to Candelaria | 4,365.43 mi (7,025.47 km) |
| Gretna to Canet de Mar | 5,007.19 mi (8,058.29 km) |
| Gretna to Cangas | 4,446.79 mi (7,156.41 km) |
| Gretna to Cangas de Narcea | 4,534.77 mi (7,298.00 km) |
| Gretna to Canovellas | 4,992.27 mi (8,034.28 km) |
| Gretna to Canteras | 4,944.70 mi (7,957.73 km) |
| Gretna to Cantillana | 4,704.22 mi (7,570.71 km) |
| Gretna to Capdepera | 5,103.26 mi (8,212.91 km) |
| Gretna to Carballo | 4,431.28 mi (7,131.45 km) |
| Gretna to Carcagente | 4,931.86 mi (7,937.06 km) |
| Gretna to Cardedeu | 4,995.27 mi (8,039.11 km) |
| Gretna to Carlet | 4,925.42 mi (7,926.69 km) |
