| Iona to Coudekerque-Branche | 4,578.62 mi (7,368.58 km) |
| Iona to Coueron | 4,455.62 mi (7,170.62 km) |
| Iona to Coulommiers | 4,645.71 mi (7,476.55 km) |
| Iona to Courbevoic | 4,607.74 mi (7,415.44 km) |
| Iona to Courcouronnes | 4,620.21 mi (7,435.50 km) |
| Iona to Cournon-d'Auvergne | 4,707.47 mi (7,575.95 km) |
| Iona to Courrieres | 4,611.52 mi (7,421.52 km) |
| Iona to Coutras | 4,564.43 mi (7,345.74 km) |
| Iona to Couzeix | 4,614.09 mi (7,425.66 km) |
| Iona to Cran-Gevrier | 4,838.04 mi (7,786.08 km) |
| Iona to Craponne | 4,777.93 mi (7,689.34 km) |
| Iona to Creil | 4,611.72 mi (7,421.85 km) |
| Iona to Crepy-en-Valois | 4,629.79 mi (7,450.93 km) |
| Iona to Crest | 4,812.78 mi (7,745.41 km) |
| Iona to Creteil | 4,618.80 mi (7,433.24 km) |
