| Rock Island to Coudekerque-Branche | 4,189.46 mi (6,742.28 km) |
| Rock Island to Coueron | 4,163.20 mi (6,700.02 km) |
| Rock Island to Coulommiers | 4,295.59 mi (6,913.08 km) |
| Rock Island to Courbevoic | 4,260.56 mi (6,856.72 km) |
| Rock Island to Courcouronnes | 4,277.38 mi (6,883.77 km) |
| Rock Island to Cournon-d'Auvergne | 4,415.60 mi (7,106.22 km) |
| Rock Island to Courrieres | 4,230.51 mi (6,808.35 km) |
| Rock Island to Coutras | 4,306.47 mi (6,930.59 km) |
| Rock Island to Couzeix | 4,331.52 mi (6,970.92 km) |
| Rock Island to Cran-Gevrier | 4,524.81 mi (7,281.97 km) |
| Rock Island to Craponne | 4,476.45 mi (7,204.15 km) |
| Rock Island to Creil | 4,256.32 mi (6,849.89 km) |
| Rock Island to Crepy-en-Valois | 4,272.68 mi (6,876.21 km) |
| Rock Island to Crest | 4,528.43 mi (7,287.80 km) |
| Rock Island to Creteil | 4,272.55 mi (6,876.01 km) |
