| Os to Coudekerque-Branche | 646.87 mi (1,041.04 km) |
| Os to Coueron | 944.60 mi (1,520.19 km) |
| Os to Coulommiers | 794.13 mi (1,278.02 km) |
| Os to Courbevoic | 793.10 mi (1,276.37 km) |
| Os to Courcouronnes | 810.77 mi (1,304.81 km) |
| Os to Cournon-d'Auvergne | 1,005.12 mi (1,617.59 km) |
| Os to Courrieres | 682.10 mi (1,097.74 km) |
| Os to Coutras | 1,074.32 mi (1,728.94 km) |
| Os to Couzeix | 1,006.53 mi (1,619.85 km) |
| Os to Cran-Gevrier | 989.98 mi (1,593.21 km) |
| Os to Craponne | 1,001.05 mi (1,611.04 km) |
| Os to Creil | 767.00 mi (1,234.36 km) |
| Os to Crepy-en-Valois | 766.35 mi (1,233.31 km) |
| Os to Crest | 1,071.01 mi (1,723.63 km) |
| Os to Creteil | 799.12 mi (1,286.05 km) |
