| Williamstown to Cognac | 3,674.41 mi (5,913.39 km) |
| Williamstown to Cogolin | 4,051.98 mi (6,521.02 km) |
| Williamstown to Colmar | 3,942.47 mi (6,344.79 km) |
| Williamstown to Colombes | 3,704.70 mi (5,962.13 km) |
| Williamstown to Colomiers | 3,806.24 mi (6,125.55 km) |
| Williamstown to Combs-la-Ville | 3,724.13 mi (5,993.41 km) |
| Williamstown to Comines | 3,691.07 mi (5,940.20 km) |
| Williamstown to Compiegne | 3,716.45 mi (5,981.05 km) |
| Williamstown to Concarneau | 3,462.97 mi (5,573.11 km) |
| Williamstown to Conde-sur-l'Escaut | 3,722.59 mi (5,990.92 km) |
| Williamstown to Conflans-Sainte-Honorine | 3,696.30 mi (5,948.62 km) |
| Williamstown to Corbas | 3,906.90 mi (6,287.54 km) |
| Williamstown to Corbeil-Essonnes | 3,722.24 mi (5,990.37 km) |
| Williamstown to Cormeilles-en-Parisis | 3,701.29 mi (5,956.65 km) |
| Williamstown to Cosne sur Loire | 3,772.49 mi (6,071.24 km) |
