| Clemson to Cocentaina | 4,409.17 mi (7,095.87 km) |
| Clemson to Coin | 4,253.36 mi (6,845.11 km) |
| Clemson to Colindres | 4,139.93 mi (6,662.58 km) |
| Clemson to Collado-Villalba | 4,183.26 mi (6,732.31 km) |
| Clemson to Colmenar Viejo | 4,194.37 mi (6,750.18 km) |
| Clemson to Colmenarejo | 4,184.73 mi (6,734.68 km) |
| Clemson to Conil de la Frontera | 4,196.55 mi (6,753.70 km) |
| Clemson to Consuegra | 4,233.90 mi (6,813.80 km) |
| Clemson to Corbera de Llobregat | 4,445.88 mi (7,154.96 km) |
| Clemson to Cordoba | 4,218.32 mi (6,788.73 km) |
| Clemson to Coria del Rio | 4,170.59 mi (6,711.91 km) |
| Clemson to Crevillente | 4,405.45 mi (7,089.89 km) |
| Clemson to Cuarte de Huerva | 4,306.53 mi (6,930.69 km) |
| Clemson to Cubellas | 4,439.70 mi (7,145.01 km) |
| Clemson to Cuellar | 4,148.76 mi (6,676.78 km) |
