| Knightdale to Carmona | 3,934.46 mi (6,331.90 km) |
| Knightdale to Cartagena | 4,164.91 mi (6,702.77 km) |
| Knightdale to Cartama | 4,005.62 mi (6,446.42 km) |
| Knightdale to Cartaya | 3,862.07 mi (6,215.40 km) |
| Knightdale to Caspe | 4,111.33 mi (6,616.54 km) |
| Knightdale to Cassa de la Selva | 4,231.51 mi (6,809.95 km) |
| Knightdale to Castalla | 4,152.31 mi (6,682.49 km) |
| Knightdale to Castellbisbal | 4,200.82 mi (6,760.57 km) |
| Knightdale to Castelldefels | 4,206.01 mi (6,768.92 km) |
| Knightdale to Castello de Ampurias | 4,230.64 mi (6,808.56 km) |
| Knightdale to Castellon de la Plana | 4,145.18 mi (6,671.02 km) |
| Knightdale to Castilleja de la Cuesta | 3,915.49 mi (6,301.37 km) |
| Knightdale to Catarroja | 4,143.03 mi (6,667.57 km) |
| Knightdale to Catral | 4,157.92 mi (6,691.52 km) |
| Knightdale to Caudete | 4,133.64 mi (6,652.45 km) |
