| Sondershausen to Cartagena | 1,113.05 mi (1,791.29 km) |
| Sondershausen to Cartama | 1,266.38 mi (2,038.05 km) |
| Sondershausen to Cartaya | 1,311.96 mi (2,111.40 km) |
| Sondershausen to Caspe | 870.33 mi (1,400.67 km) |
| Sondershausen to Cassa de la Selva | 755.68 mi (1,216.16 km) |
| Sondershausen to Castalla | 1,044.33 mi (1,680.68 km) |
| Sondershausen to Castellbisbal | 802.43 mi (1,291.39 km) |
| Sondershausen to Castelldefels | 814.52 mi (1,310.85 km) |
| Sondershausen to Castello de Ampurias | 728.32 mi (1,172.12 km) |
| Sondershausen to Castellon de la Plana | 944.10 mi (1,519.38 km) |
| Sondershausen to Castilleja de la Cuesta | 1,271.02 mi (2,045.52 km) |
| Sondershausen to Catarroja | 988.70 mi (1,591.16 km) |
| Sondershausen to Catral | 1,074.37 mi (1,729.03 km) |
| Sondershausen to Caudete | 1,046.12 mi (1,683.57 km) |
| Sondershausen to Cehegin | 1,104.57 mi (1,777.64 km) |
