| Siegen to Cartagena | 1,018.38 mi (1,638.93 km) |
| Siegen to Cartama | 1,161.12 mi (1,868.64 km) |
| Siegen to Cartaya | 1,199.09 mi (1,929.75 km) |
| Siegen to Caspe | 769.35 mi (1,238.15 km) |
| Siegen to Cassa de la Selva | 667.60 mi (1,074.39 km) |
| Siegen to Castalla | 948.43 mi (1,526.35 km) |
| Siegen to Castellbisbal | 710.57 mi (1,143.56 km) |
| Siegen to Castelldefels | 723.31 mi (1,164.06 km) |
| Siegen to Castello de Ampurias | 640.13 mi (1,030.20 km) |
| Siegen to Castellon de la Plana | 847.07 mi (1,363.23 km) |
| Siegen to Castilleja de la Cuesta | 1,160.52 mi (1,867.68 km) |
| Siegen to Catarroja | 891.74 mi (1,435.12 km) |
| Siegen to Catral | 979.04 mi (1,575.61 km) |
| Siegen to Caudete | 948.64 mi (1,526.69 km) |
| Siegen to Cehegin | 1,005.50 mi (1,618.20 km) |
