| Bad Salzdetfurth to Cartagena | 1,132.42 mi (1,822.45 km) |
| Bad Salzdetfurth to Cartama | 1,278.42 mi (2,057.41 km) |
| Bad Salzdetfurth to Cartaya | 1,317.47 mi (2,120.27 km) |
| Bad Salzdetfurth to Caspe | 885.29 mi (1,424.74 km) |
| Bad Salzdetfurth to Cassa de la Selva | 778.51 mi (1,252.89 km) |
| Bad Salzdetfurth to Castalla | 1,062.85 mi (1,710.50 km) |
| Bad Salzdetfurth to Castellbisbal | 823.17 mi (1,324.76 km) |
| Bad Salzdetfurth to Castelldefels | 835.66 mi (1,344.87 km) |
| Bad Salzdetfurth to Castello de Ampurias | 751.03 mi (1,208.66 km) |
| Bad Salzdetfurth to Castellon de la Plana | 961.80 mi (1,547.86 km) |
| Bad Salzdetfurth to Castilleja de la Cuesta | 1,278.71 mi (2,057.88 km) |
| Bad Salzdetfurth to Catarroja | 1,006.49 mi (1,619.79 km) |
| Bad Salzdetfurth to Catral | 1,093.28 mi (1,759.47 km) |
| Bad Salzdetfurth to Caudete | 1,063.61 mi (1,711.72 km) |
| Bad Salzdetfurth to Cehegin | 1,121.04 mi (1,804.14 km) |
