| Knightdale to Chivasso | 4,366.28 mi (7,026.85 km) |
| Knightdale to Ciampino | 4,682.83 mi (7,536.29 km) |
| Knightdale to Cicciano | 4,798.41 mi (7,722.30 km) |
| Knightdale to Cingoli | 4,658.36 mi (7,496.90 km) |
| Knightdale to Cinisello Balsamo | 4,414.12 mi (7,103.83 km) |
| Knightdale to Cinisi | 4,829.75 mi (7,772.74 km) |
| Knightdale to Cirie | 4,352.32 mi (7,004.39 km) |
| Knightdale to Ciro Marina | 4,972.66 mi (8,002.73 km) |
| Knightdale to Cislago | 4,400.24 mi (7,081.49 km) |
| Knightdale to Cisterna di Latina | 4,700.13 mi (7,564.13 km) |
| Knightdale to Cisternino | 4,936.75 mi (7,944.93 km) |
| Knightdale to Citta di Castello | 4,612.29 mi (7,422.76 km) |
| Knightdale to Citta Sant'Angelo | 4,723.67 mi (7,602.02 km) |
| Knightdale to Cittadella | 4,522.39 mi (7,278.09 km) |
| Knightdale to Cittanova | 4,962.00 mi (7,985.56 km) |
