| Widnes to Collegno | 735.92 mi (1,184.34 km) |
| Widnes to Cologno al Serio | 772.74 mi (1,243.61 km) |
| Widnes to Cologno Monzese | 762.22 mi (1,226.68 km) |
| Widnes to Colorno | 828.43 mi (1,333.23 km) |
| Widnes to Comacchio | 899.31 mi (1,447.30 km) |
| Widnes to Comiso | 1,405.82 mi (2,262.44 km) |
| Widnes to Como | 741.42 mi (1,193.20 km) |
| Widnes to Concordia Sagittaria | 870.29 mi (1,400.60 km) |
| Widnes to Concorezzo | 760.83 mi (1,224.44 km) |
| Widnes to Conegliano | 845.15 mi (1,360.14 km) |
| Widnes to Conselice | 897.04 mi (1,443.64 km) |
| Widnes to Conselve | 861.94 mi (1,387.16 km) |
| Widnes to Conversano | 1,258.06 mi (2,024.64 km) |
| Widnes to Copertino | 1,326.59 mi (2,134.95 km) |
| Widnes to Copparo | 877.50 mi (1,412.20 km) |
