| Williamstown to Castrovillari | 4,603.29 mi (7,408.29 km) |
| Williamstown to Catania | 4,640.90 mi (7,468.81 km) |
| Williamstown to Catanzaro | 4,655.93 mi (7,493.00 km) |
| Williamstown to Cattolica | 4,301.78 mi (6,923.04 km) |
| Williamstown to Cava de' Tirreni | 4,503.79 mi (7,248.16 km) |
| Williamstown to Cavallino | 4,672.52 mi (7,519.70 km) |
| Williamstown to Cavarzere | 4,234.28 mi (6,814.42 km) |
| Williamstown to Cave | 4,385.28 mi (7,057.43 km) |
| Williamstown to Cavriago | 4,182.12 mi (6,730.47 km) |
| Williamstown to Cavriglia | 4,262.75 mi (6,860.24 km) |
| Williamstown to Cazzago San Martino | 4,131.78 mi (6,649.46 km) |
| Williamstown to Ceccano | 4,411.86 mi (7,100.20 km) |
| Williamstown to Cecina | 4,227.07 mi (6,802.81 km) |
| Williamstown to Cefalu | 4,571.66 mi (7,357.37 km) |
| Williamstown to Ceglie Messapico | 4,629.14 mi (7,449.88 km) |
