| Olney to Coudekerque-Branche | 3,769.04 mi (6,065.68 km) |
| Olney to Coueron | 3,687.91 mi (5,935.11 km) |
| Olney to Coulommiers | 3,853.73 mi (6,201.98 km) |
| Olney to Courbevoic | 3,816.63 mi (6,142.27 km) |
| Olney to Courcouronnes | 3,831.18 mi (6,165.69 km) |
| Olney to Cournon-d'Auvergne | 3,943.08 mi (6,345.78 km) |
| Olney to Courrieres | 3,805.74 mi (6,124.75 km) |
| Olney to Coutras | 3,814.86 mi (6,139.42 km) |
| Olney to Couzeix | 3,853.06 mi (6,200.91 km) |
| Olney to Cran-Gevrier | 4,065.06 mi (6,542.08 km) |
| Olney to Craponne | 4,009.79 mi (6,453.14 km) |
| Olney to Creil | 3,817.02 mi (6,142.89 km) |
| Olney to Crepy-en-Valois | 3,834.54 mi (6,171.10 km) |
| Olney to Crest | 4,053.23 mi (6,523.05 km) |
| Olney to Creteil | 3,828.23 mi (6,160.95 km) |
