| Knightdale to Cognac | 3,985.03 mi (6,413.28 km) |
| Knightdale to Cogolin | 4,361.92 mi (7,019.84 km) |
| Knightdale to Colmar | 4,261.80 mi (6,858.70 km) |
| Knightdale to Colombes | 4,023.12 mi (6,474.59 km) |
| Knightdale to Colomiers | 4,113.17 mi (6,619.51 km) |
| Knightdale to Combs-la-Ville | 4,042.24 mi (6,505.36 km) |
| Knightdale to Comines | 4,012.81 mi (6,457.99 km) |
| Knightdale to Compiegne | 4,035.97 mi (6,495.26 km) |
| Knightdale to Concarneau | 3,776.53 mi (6,077.74 km) |
| Knightdale to Conde-sur-l'Escaut | 4,044.06 mi (6,508.28 km) |
| Knightdale to Conflans-Sainte-Honorine | 4,014.79 mi (6,461.18 km) |
| Knightdale to Corbas | 4,220.62 mi (6,792.44 km) |
| Knightdale to Corbeil-Essonnes | 4,040.22 mi (6,502.11 km) |
| Knightdale to Cormeilles-en-Parisis | 4,019.78 mi (6,469.21 km) |
| Knightdale to Cosne sur Loire | 4,088.47 mi (6,579.75 km) |
