| Portes-les-Valence to Cabestany | 179.59 mi (289.02 km) |
| Portes-les-Valence to Cabries | 102.05 mi (164.24 km) |
| Portes-les-Valence to Cachan | 296.22 mi (476.72 km) |
| Portes-les-Valence to Caen | 386.59 mi (622.15 km) |
| Portes-les-Valence to Cagnes-sur-Mer | 140.06 mi (225.40 km) |
| Portes-les-Valence to Cahors | 171.38 mi (275.81 km) |
| Portes-les-Valence to Calais | 442.32 mi (711.84 km) |
| Portes-les-Valence to Caluire-et-Cuire | 63.72 mi (102.55 km) |
| Portes-les-Valence to Cambrai | 374.31 mi (602.40 km) |
| Portes-les-Valence to Canet-en-Roussillon | 176.41 mi (283.90 km) |
| Portes-les-Valence to Cannes | 139.77 mi (224.93 km) |
| Portes-les-Valence to Canteleu | 364.01 mi (585.82 km) |
| Portes-les-Valence to Capbreton | 323.47 mi (520.58 km) |
| Portes-les-Valence to Carcassonne | 170.14 mi (273.81 km) |
| Portes-les-Valence to Carmaux | 145.63 mi (234.37 km) |
