| Groningen to Cartagena | 1,137.90 mi (1,831.28 km) |
| Groningen to Cartama | 1,261.50 mi (2,030.19 km) |
| Groningen to Cartaya | 1,282.34 mi (2,063.72 km) |
| Groningen to Caspe | 883.07 mi (1,421.16 km) |
| Groningen to Cassa de la Selva | 801.08 mi (1,289.22 km) |
| Groningen to Castalla | 1,067.06 mi (1,717.27 km) |
| Groningen to Castellbisbal | 838.62 mi (1,349.63 km) |
| Groningen to Castelldefels | 851.93 mi (1,371.04 km) |
| Groningen to Castello de Ampurias | 774.11 mi (1,245.81 km) |
| Groningen to Castellon de la Plana | 965.53 mi (1,553.87 km) |
| Groningen to Castilleja de la Cuesta | 1,249.89 mi (2,011.51 km) |
| Groningen to Catarroja | 1,009.60 mi (1,624.79 km) |
| Groningen to Catral | 1,098.10 mi (1,767.22 km) |
| Groningen to Caudete | 1,064.90 mi (1,713.79 km) |
| Groningen to Cehegin | 1,118.54 mi (1,800.11 km) |
