| West Islip to Coudekerque-Branche | 3,546.34 mi (5,707.28 km) |
| West Islip to Coueron | 3,461.86 mi (5,571.33 km) |
| West Islip to Coulommiers | 3,629.38 mi (5,840.92 km) |
| West Islip to Courbevoic | 3,592.18 mi (5,781.05 km) |
| West Islip to Courcouronnes | 3,606.57 mi (5,804.22 km) |
| West Islip to Cournon-d'Auvergne | 3,717.01 mi (5,981.94 km) |
| West Islip to Courrieres | 3,582.66 mi (5,765.73 km) |
| West Islip to Coutras | 3,588.16 mi (5,774.59 km) |
| West Islip to Couzeix | 3,626.79 mi (5,836.76 km) |
| West Islip to Cran-Gevrier | 3,839.50 mi (6,179.08 km) |
| West Islip to Craponne | 3,783.93 mi (6,089.65 km) |
| West Islip to Creil | 3,592.87 mi (5,782.17 km) |
| West Islip to Crepy-en-Valois | 3,610.46 mi (5,810.47 km) |
| West Islip to Crest | 3,826.99 mi (6,158.94 km) |
| West Islip to Creteil | 3,603.75 mi (5,799.67 km) |
