| Widnes to Cividale del Friuli | 875.87 mi (1,409.57 km) |
| Widnes to Civita Castellana | 1,033.93 mi (1,663.95 km) |
| Widnes to Civitanova Marche | 1,022.71 mi (1,645.89 km) |
| Widnes to Civitavecchia | 1,026.29 mi (1,651.66 km) |
| Widnes to Civitella in Val di Chiana | 951.27 mi (1,530.92 km) |
| Widnes to Clusone | 765.49 mi (1,231.93 km) |
| Widnes to Coccaglio | 782.73 mi (1,259.68 km) |
| Widnes to Codigoro | 890.35 mi (1,432.89 km) |
| Widnes to Codogno | 795.05 mi (1,279.51 km) |
| Widnes to Codroipo | 865.79 mi (1,393.35 km) |
| Widnes to Cogoleto | 805.21 mi (1,295.86 km) |
| Widnes to Colle di Val d'Elsa | 934.06 mi (1,503.22 km) |
| Widnes to Colle Salvetti | 903.30 mi (1,453.71 km) |
| Widnes to Collecchio | 832.83 mi (1,340.31 km) |
| Widnes to Colleferro | 1,083.73 mi (1,744.09 km) |
