| Widnau to Cognac | 487.45 mi (784.47 km) |
| Widnau to Cogolin | 323.71 mi (520.97 km) |
| Widnau to Colmar | 115.84 mi (186.43 km) |
| Widnau to Colombes | 355.93 mi (572.81 km) |
| Widnau to Colomiers | 478.99 mi (770.86 km) |
| Widnau to Combs-la-Ville | 338.23 mi (544.34 km) |
| Widnau to Comines | 379.03 mi (609.98 km) |
| Widnau to Compiegne | 341.82 mi (550.11 km) |
| Widnau to Concarneau | 630.98 mi (1,015.47 km) |
| Widnau to Conde-sur-l'Escaut | 345.72 mi (556.38 km) |
| Widnau to Conflans-Sainte-Honorine | 364.00 mi (585.80 km) |
| Widnau to Corbas | 254.67 mi (409.85 km) |
| Widnau to Corbeil-Essonnes | 340.91 mi (548.65 km) |
| Widnau to Cormeilles-en-Parisis | 359.04 mi (577.81 km) |
| Widnau to Cosne sur Loire | 313.60 mi (504.70 km) |
