| Letterkenny to Coudekerque-Branche | 499.92 mi (804.55 km) |
| Letterkenny to Coueron | 594.31 mi (956.45 km) |
| Letterkenny to Coulommiers | 625.09 mi (1,005.98 km) |
| Letterkenny to Courbevoic | 595.44 mi (958.26 km) |
| Letterkenny to Courcouronnes | 614.96 mi (989.69 km) |
| Letterkenny to Cournon-d'Auvergne | 796.19 mi (1,281.34 km) |
| Letterkenny to Courrieres | 543.17 mi (874.15 km) |
| Letterkenny to Coutras | 762.54 mi (1,227.19 km) |
| Letterkenny to Couzeix | 739.77 mi (1,190.55 km) |
| Letterkenny to Cran-Gevrier | 869.62 mi (1,399.52 km) |
| Letterkenny to Craponne | 837.76 mi (1,348.24 km) |
| Letterkenny to Creil | 584.18 mi (940.15 km) |
| Letterkenny to Crepy-en-Valois | 598.08 mi (962.51 km) |
| Letterkenny to Crest | 903.64 mi (1,454.26 km) |
| Letterkenny to Creteil | 607.28 mi (977.32 km) |
