| Siegburg to Cartagena | 996.73 mi (1,604.08 km) |
| Siegburg to Cartama | 1,135.51 mi (1,827.42 km) |
| Siegburg to Cartaya | 1,170.62 mi (1,883.93 km) |
| Siegburg to Caspe | 745.90 mi (1,200.42 km) |
| Siegburg to Cassa de la Selva | 649.19 mi (1,044.76 km) |
| Siegburg to Castalla | 926.46 mi (1,491.00 km) |
| Siegburg to Castellbisbal | 690.64 mi (1,111.48 km) |
| Siegburg to Castelldefels | 703.57 mi (1,132.29 km) |
| Siegburg to Castello de Ampurias | 621.81 mi (1,000.70 km) |
| Siegburg to Castellon de la Plana | 824.89 mi (1,327.54 km) |
| Siegburg to Castilleja de la Cuesta | 1,132.97 mi (1,823.35 km) |
| Siegburg to Catarroja | 869.50 mi (1,399.32 km) |
| Siegburg to Catral | 957.22 mi (1,540.50 km) |
| Siegburg to Caudete | 926.11 mi (1,490.42 km) |
| Siegburg to Cehegin | 982.31 mi (1,580.87 km) |
