| Niederkassel to Cartagena | 994.32 mi (1,600.20 km) |
| Niederkassel to Cartama | 1,132.05 mi (1,821.87 km) |
| Niederkassel to Cartaya | 1,166.36 mi (1,877.08 km) |
| Niederkassel to Caspe | 743.08 mi (1,195.87 km) |
| Niederkassel to Cassa de la Selva | 647.66 mi (1,042.30 km) |
| Niederkassel to Castalla | 923.99 mi (1,487.01 km) |
| Niederkassel to Castellbisbal | 688.73 mi (1,108.40 km) |
| Niederkassel to Castelldefels | 701.70 mi (1,129.28 km) |
| Niederkassel to Castello de Ampurias | 620.31 mi (998.29 km) |
| Niederkassel to Castellon de la Plana | 822.38 mi (1,323.50 km) |
| Niederkassel to Castilleja de la Cuesta | 1,128.99 mi (1,816.93 km) |
| Niederkassel to Catarroja | 866.96 mi (1,395.24 km) |
| Niederkassel to Catral | 954.78 mi (1,536.56 km) |
| Niederkassel to Caudete | 923.48 mi (1,486.20 km) |
| Niederkassel to Cehegin | 979.51 mi (1,576.37 km) |
