| Widnau to Carpentras | 319.69 mi (514.49 km) |
| Widnau to Carquefou | 520.46 mi (837.59 km) |
| Widnau to Carqueiranne | 344.07 mi (553.73 km) |
| Widnau to Carrieres-sous-Poissy | 365.74 mi (588.59 km) |
| Widnau to Carrieres-sur-Seine | 354.09 mi (569.86 km) |
| Widnau to Carros | 276.96 mi (445.73 km) |
| Widnau to Carvin | 370.49 mi (596.25 km) |
| Widnau to Castanet-Tolosan | 476.54 mi (766.92 km) |
| Widnau to Castelginest | 471.87 mi (759.40 km) |
| Widnau to Castelnau-le-Lez | 380.05 mi (611.63 km) |
| Widnau to Castelnaudary | 467.11 mi (751.73 km) |
| Widnau to Castelsarrasin | 471.90 mi (759.46 km) |
| Widnau to Castres | 443.27 mi (713.38 km) |
| Widnau to Caudebec-les-Elbeuf | 416.06 mi (669.58 km) |
| Widnau to Caudry | 340.05 mi (547.26 km) |
