| Williamstown to Coudekerque-Branche | 3,659.58 mi (5,889.52 km) |
| Williamstown to Coueron | 3,574.70 mi (5,752.93 km) |
| Williamstown to Coulommiers | 3,742.59 mi (6,023.11 km) |
| Williamstown to Courbevoic | 3,705.38 mi (5,963.23 km) |
| Williamstown to Courcouronnes | 3,719.76 mi (5,986.37 km) |
| Williamstown to Cournon-d'Auvergne | 3,829.83 mi (6,163.51 km) |
| Williamstown to Courrieres | 3,695.90 mi (5,947.98 km) |
| Williamstown to Coutras | 3,700.58 mi (5,955.52 km) |
| Williamstown to Couzeix | 3,739.52 mi (6,018.18 km) |
| Williamstown to Cran-Gevrier | 3,952.50 mi (6,360.93 km) |
| Williamstown to Craponne | 3,896.84 mi (6,271.36 km) |
| Williamstown to Creil | 3,706.09 mi (5,964.38 km) |
| Williamstown to Crepy-en-Valois | 3,723.69 mi (5,992.69 km) |
| Williamstown to Crest | 3,939.73 mi (6,340.38 km) |
| Williamstown to Creteil | 3,716.94 mi (5,981.84 km) |
