| Knightdale to Coudekerque-Branche | 3,981.51 mi (6,407.62 km) |
| Knightdale to Coueron | 3,887.90 mi (6,256.97 km) |
| Knightdale to Coulommiers | 4,061.19 mi (6,535.85 km) |
| Knightdale to Courbevoic | 4,023.76 mi (6,475.61 km) |
| Knightdale to Courcouronnes | 4,037.73 mi (6,498.09 km) |
| Knightdale to Cournon-d'Auvergne | 4,142.67 mi (6,666.98 km) |
| Knightdale to Courrieres | 4,017.16 mi (6,464.99 km) |
| Knightdale to Coutras | 4,009.83 mi (6,453.21 km) |
| Knightdale to Couzeix | 4,051.47 mi (6,520.22 km) |
| Knightdale to Cran-Gevrier | 4,267.39 mi (6,867.70 km) |
| Knightdale to Craponne | 4,210.61 mi (6,776.32 km) |
| Knightdale to Creil | 4,025.20 mi (6,477.93 km) |
| Knightdale to Crepy-en-Valois | 4,042.92 mi (6,506.45 km) |
| Knightdale to Crest | 4,251.65 mi (6,842.38 km) |
| Knightdale to Creteil | 4,035.23 mi (6,494.07 km) |
