| Mountain Ash to Coudekerque-Branche | 253.04 mi (407.22 km) |
| Mountain Ash to Coueron | 317.38 mi (510.77 km) |
| Mountain Ash to Coulommiers | 347.27 mi (558.88 km) |
| Mountain Ash to Courbevoic | 314.19 mi (505.64 km) |
| Mountain Ash to Courcouronnes | 332.62 mi (535.31 km) |
| Mountain Ash to Cournon-d'Auvergne | 507.78 mi (817.19 km) |
| Mountain Ash to Courrieres | 287.27 mi (462.32 km) |
| Mountain Ash to Coutras | 482.35 mi (776.26 km) |
| Mountain Ash to Couzeix | 452.65 mi (728.47 km) |
| Mountain Ash to Cran-Gevrier | 587.09 mi (944.83 km) |
| Mountain Ash to Craponne | 551.31 mi (887.25 km) |
| Mountain Ash to Creil | 307.26 mi (494.49 km) |
| Mountain Ash to Crepy-en-Valois | 323.21 mi (520.16 km) |
| Mountain Ash to Crest | 615.99 mi (991.34 km) |
| Mountain Ash to Creteil | 326.23 mi (525.02 km) |
