| Portes-les-Valence to Carpentras | 57.12 mi (91.93 km) |
| Portes-les-Valence to Carquefou | 347.99 mi (560.03 km) |
| Portes-les-Valence to Carqueiranne | 136.52 mi (219.71 km) |
| Portes-les-Valence to Carrieres-sous-Poissy | 311.70 mi (501.64 km) |
| Portes-les-Valence to Carrieres-sur-Seine | 304.50 mi (490.04 km) |
| Portes-les-Valence to Carros | 137.47 mi (221.24 km) |
| Portes-les-Valence to Carvin | 398.37 mi (641.12 km) |
| Portes-les-Valence to Castanet-Tolosan | 191.83 mi (308.72 km) |
| Portes-les-Valence to Castelginest | 188.81 mi (303.86 km) |
| Portes-les-Valence to Castelnau-le-Lez | 98.10 mi (157.87 km) |
| Portes-les-Valence to Castelnaudary | 180.47 mi (290.44 km) |
| Portes-les-Valence to Castelsarrasin | 194.59 mi (313.17 km) |
| Portes-les-Valence to Castres | 156.97 mi (252.62 km) |
| Portes-les-Valence to Caudebec-les-Elbeuf | 354.35 mi (570.28 km) |
| Portes-les-Valence to Caudry | 369.22 mi (594.21 km) |
