| Widnes to Cognac | 540.48 mi (869.82 km) |
| Widnes to Cogolin | 816.42 mi (1,313.90 km) |
| Widnes to Colmar | 571.53 mi (919.78 km) |
| Widnes to Colombes | 374.89 mi (603.32 km) |
| Widnes to Colomiers | 698.55 mi (1,124.20 km) |
| Widnes to Combs-la-Ville | 397.22 mi (639.27 km) |
| Widnes to Comines | 302.64 mi (487.06 km) |
| Widnes to Compiegne | 362.69 mi (583.69 km) |
| Widnes to Concarneau | 382.73 mi (615.94 km) |
| Widnes to Conde-sur-l'Escaut | 336.07 mi (540.85 km) |
| Widnes to Conflans-Sainte-Honorine | 366.70 mi (590.15 km) |
| Widnes to Corbas | 631.52 mi (1,016.33 km) |
| Widnes to Corbeil-Essonnes | 398.54 mi (641.38 km) |
| Widnes to Cormeilles-en-Parisis | 370.72 mi (596.61 km) |
| Widnes to Cosne sur Loire | 480.47 mi (773.24 km) |
