| Widnes to Cadiz | 1,175.36 mi (1,891.55 km) |
| Widnes to Calafell | 863.75 mi (1,390.07 km) |
| Widnes to Calahorra | 765.18 mi (1,231.44 km) |
| Widnes to Calasparra | 1,046.69 mi (1,684.49 km) |
| Widnes to Calatayud | 831.57 mi (1,338.29 km) |
| Widnes to Caldas de Montbuy | 841.57 mi (1,354.38 km) |
| Widnes to Caldas de Reyes | 791.44 mi (1,273.70 km) |
| Widnes to Calella | 849.11 mi (1,366.51 km) |
| Widnes to Callosa de Segura | 1,056.69 mi (1,700.58 km) |
| Widnes to Calpe | 1,025.38 mi (1,650.19 km) |
| Widnes to Calvia | 984.64 mi (1,584.62 km) |
| Widnes to Camas | 1,114.09 mi (1,792.96 km) |
| Widnes to Cambados | 800.75 mi (1,288.69 km) |
| Widnes to Cambre | 741.97 mi (1,194.08 km) |
| Widnes to Cambrils | 867.62 mi (1,396.30 km) |
