| Widnau to Carmona | 1,034.48 mi (1,664.83 km) |
| Widnau to Cartagena | 864.85 mi (1,391.85 km) |
| Widnau to Cartama | 1,036.46 mi (1,668.01 km) |
| Widnau to Cartaya | 1,101.89 mi (1,773.32 km) |
| Widnau to Caspe | 639.35 mi (1,028.94 km) |
| Widnau to Cassa de la Selva | 504.94 mi (812.62 km) |
| Widnau to Castalla | 799.25 mi (1,286.27 km) |
| Widnau to Castellbisbal | 556.19 mi (895.11 km) |
| Widnau to Castelldefels | 566.84 mi (912.24 km) |
| Widnau to Castello de Ampurias | 478.70 mi (770.39 km) |
| Widnau to Castellon de la Plana | 703.08 mi (1,131.51 km) |
| Widnau to Castilleja de la Cuesta | 1,054.47 mi (1,697.00 km) |
| Widnau to Catarroja | 746.58 mi (1,201.50 km) |
| Widnau to Catral | 827.83 mi (1,332.26 km) |
| Widnau to Caudete | 803.83 mi (1,293.63 km) |
