| Slidell to Cocentaina | 4,914.75 mi (7,909.53 km) |
| Slidell to Coin | 4,755.62 mi (7,653.43 km) |
| Slidell to Colindres | 4,646.88 mi (7,478.43 km) |
| Slidell to Collado-Villalba | 4,689.28 mi (7,546.66 km) |
| Slidell to Colmenar Viejo | 4,700.44 mi (7,564.62 km) |
| Slidell to Colmenarejo | 4,690.71 mi (7,548.96 km) |
| Slidell to Conil de la Frontera | 4,697.71 mi (7,560.24 km) |
| Slidell to Consuegra | 4,739.24 mi (7,627.07 km) |
| Slidell to Corbera de Llobregat | 4,952.80 mi (7,970.76 km) |
| Slidell to Cordoba | 4,721.95 mi (7,599.24 km) |
| Slidell to Coria del Rio | 4,673.07 mi (7,520.58 km) |
| Slidell to Crevillente | 4,910.60 mi (7,902.85 km) |
| Slidell to Cuarte de Huerva | 4,813.30 mi (7,746.27 km) |
| Slidell to Cubellas | 4,946.57 mi (7,960.74 km) |
| Slidell to Cuellar | 4,655.11 mi (7,491.68 km) |
