| Portes-les-Valence to Coudekerque-Branche | 440.27 mi (708.55 km) |
| Portes-les-Valence to Coueron | 355.30 mi (571.80 km) |
| Portes-les-Valence to Coulommiers | 285.24 mi (459.04 km) |
| Portes-les-Valence to Courbevoic | 304.36 mi (489.83 km) |
| Portes-les-Valence to Courcouronnes | 283.82 mi (456.76 km) |
| Portes-les-Valence to Cournon-d'Auvergne | 101.30 mi (163.03 km) |
| Portes-les-Valence to Courrieres | 396.14 mi (637.52 km) |
| Portes-les-Valence to Coutras | 244.96 mi (394.22 km) |
| Portes-les-Valence to Couzeix | 189.65 mi (305.21 km) |
| Portes-les-Valence to Cran-Gevrier | 92.82 mi (149.37 km) |
| Portes-les-Valence to Craponne | 60.71 mi (97.70 km) |
| Portes-les-Valence to Creil | 323.19 mi (520.12 km) |
| Portes-les-Valence to Crepy-en-Valois | 315.50 mi (507.75 km) |
| Portes-les-Valence to Crest | 12.31 mi (19.81 km) |
| Portes-les-Valence to Creteil | 293.71 mi (472.69 km) |
