| Duffel to Cartagena | 970.82 mi (1,562.39 km) |
| Duffel to Cartama | 1,091.49 mi (1,756.58 km) |
| Duffel to Cartaya | 1,112.93 mi (1,791.08 km) |
| Duffel to Caspe | 715.29 mi (1,151.15 km) |
| Duffel to Cassa de la Selva | 641.13 mi (1,031.80 km) |
| Duffel to Castalla | 899.91 mi (1,448.27 km) |
| Duffel to Castellbisbal | 675.72 mi (1,087.46 km) |
| Duffel to Castelldefels | 689.17 mi (1,109.12 km) |
| Duffel to Castello de Ampurias | 614.69 mi (989.25 km) |
| Duffel to Castellon de la Plana | 798.64 mi (1,285.28 km) |
| Duffel to Castilleja de la Cuesta | 1,079.97 mi (1,738.05 km) |
| Duffel to Catarroja | 842.41 mi (1,355.73 km) |
| Duffel to Catral | 930.99 mi (1,498.28 km) |
| Duffel to Caudete | 897.18 mi (1,443.87 km) |
| Duffel to Cehegin | 950.05 mi (1,528.95 km) |
