| Widnes to Carmona | 1,107.09 mi (1,781.69 km) |
| Widnes to Cartagena | 1,092.31 mi (1,757.91 km) |
| Widnes to Cartama | 1,154.15 mi (1,857.43 km) |
| Widnes to Cartaya | 1,131.03 mi (1,820.21 km) |
| Widnes to Caspe | 847.38 mi (1,363.73 km) |
| Widnes to Cassa de la Selva | 833.93 mi (1,342.08 km) |
| Widnes to Castalla | 1,024.91 mi (1,649.43 km) |
| Widnes to Castellbisbal | 849.80 mi (1,367.62 km) |
| Widnes to Castelldefels | 862.96 mi (1,388.81 km) |
| Widnes to Castello de Ampurias | 812.47 mi (1,307.54 km) |
| Widnes to Castellon de la Plana | 933.07 mi (1,501.64 km) |
| Widnes to Castilleja de la Cuesta | 1,115.49 mi (1,795.21 km) |
| Widnes to Catarroja | 970.76 mi (1,562.28 km) |
| Widnes to Catral | 1,054.45 mi (1,696.97 km) |
| Widnes to Caudete | 1,016.16 mi (1,635.36 km) |
