| Knightdale to Cocentaina | 4,159.52 mi (6,694.10 km) |
| Knightdale to Coin | 4,000.76 mi (6,438.60 km) |
| Knightdale to Colindres | 3,894.57 mi (6,267.71 km) |
| Knightdale to Collado-Villalba | 3,934.35 mi (6,331.73 km) |
| Knightdale to Colmenar Viejo | 3,945.56 mi (6,349.77 km) |
| Knightdale to Colmenarejo | 3,935.74 mi (6,333.96 km) |
| Knightdale to Conil de la Frontera | 3,943.40 mi (6,346.28 km) |
| Knightdale to Consuegra | 3,983.92 mi (6,411.50 km) |
| Knightdale to Corbera de Llobregat | 4,200.07 mi (6,759.35 km) |
| Knightdale to Cordoba | 3,966.62 mi (6,383.65 km) |
| Knightdale to Coria del Rio | 3,918.11 mi (6,305.59 km) |
| Knightdale to Crevillente | 4,155.22 mi (6,687.18 km) |
| Knightdale to Cuarte de Huerva | 4,059.79 mi (6,533.60 km) |
| Knightdale to Cubellas | 4,193.52 mi (6,748.83 km) |
| Knightdale to Cuellar | 3,900.60 mi (6,277.41 km) |
