| Knightdale to Cadiz | 3,925.24 mi (6,317.06 km) |
| Knightdale to Calafell | 4,188.82 mi (6,741.25 km) |
| Knightdale to Calahorra | 3,991.37 mi (6,423.49 km) |
| Knightdale to Calasparra | 4,111.46 mi (6,616.76 km) |
| Knightdale to Calatayud | 4,031.42 mi (6,487.94 km) |
| Knightdale to Caldas de Montbuy | 4,205.29 mi (6,767.76 km) |
| Knightdale to Caldas de Reyes | 3,663.64 mi (5,896.05 km) |
| Knightdale to Calella | 4,229.21 mi (6,806.26 km) |
| Knightdale to Callosa de Segura | 4,155.25 mi (6,687.22 km) |
| Knightdale to Calpe | 4,186.22 mi (6,737.06 km) |
| Knightdale to Calvia | 4,280.01 mi (6,888.02 km) |
| Knightdale to Camas | 3,915.86 mi (6,301.96 km) |
| Knightdale to Cambados | 3,657.94 mi (5,886.88 km) |
| Knightdale to Cambre | 3,664.30 mi (5,897.12 km) |
| Knightdale to Cambrils | 4,168.00 mi (6,707.74 km) |
