| Union to Coudekerque-Branche | 4,351.79 mi (7,003.53 km) |
| Union to Coueron | 4,312.52 mi (6,940.34 km) |
| Union to Coulommiers | 4,453.41 mi (7,167.07 km) |
| Union to Courbevoic | 4,417.81 mi (7,109.78 km) |
| Union to Courcouronnes | 4,434.14 mi (7,136.06 km) |
| Union to Cournon-d'Auvergne | 4,566.28 mi (7,348.72 km) |
| Union to Courrieres | 4,392.01 mi (7,068.25 km) |
| Union to Coutras | 4,451.86 mi (7,164.58 km) |
| Union to Couzeix | 4,480.47 mi (7,210.62 km) |
| Union to Cran-Gevrier | 4,678.95 mi (7,530.04 km) |
| Union to Craponne | 4,628.76 mi (7,449.27 km) |
| Union to Creil | 4,414.63 mi (7,104.66 km) |
| Union to Crepy-en-Valois | 4,431.30 mi (7,131.48 km) |
| Union to Crest | 4,678.70 mi (7,529.64 km) |
| Union to Creteil | 4,429.74 mi (7,128.98 km) |
