| Widnes to Cortona | 967.41 mi (1,556.89 km) |
| Widnes to Cosenza | 1,319.93 mi (2,124.23 km) |
| Widnes to Cossato | 726.09 mi (1,168.53 km) |
| Widnes to Costa Volpino | 773.05 mi (1,244.10 km) |
| Widnes to Creazzo | 834.11 mi (1,342.37 km) |
| Widnes to Crema | 783.49 mi (1,260.90 km) |
| Widnes to Cremona | 806.82 mi (1,298.44 km) |
| Widnes to Crevalcore | 864.38 mi (1,391.09 km) |
| Widnes to Crispiano | 1,281.36 mi (2,062.15 km) |
| Widnes to Crosia | 1,321.75 mi (2,127.15 km) |
| Widnes to Crotone | 1,359.66 mi (2,188.17 km) |
| Widnes to Cuneo | 774.96 mi (1,247.18 km) |
| Widnes to Cuorgne | 720.63 mi (1,159.75 km) |
| Widnes to Cusano Milanino | 758.12 mi (1,220.07 km) |
| Widnes to Cutro | 1,358.14 mi (2,185.71 km) |
