| Williamstown to Cibolo (Texas) | 1,488.38 mi (2,395.32 km) |
| Williamstown to Cicero (Illinois) | 684.52 mi (1,101.62 km) |
| Williamstown to Cimarron Hills (Colorado) | 1,583.44 mi (2,548.29 km) |
| Williamstown to Cincinnati (Ohio) | 509.73 mi (820.32 km) |
| Williamstown to Cinco Ranch (Texas) | 1,360.90 mi (2,190.15 km) |
| Williamstown to Circleville (Ohio) | 423.10 mi (680.92 km) |
| Williamstown to Citrus (California) | 2,379.02 mi (3,828.66 km) |
| Williamstown to Citrus Heights (California) | 2,452.80 mi (3,947.40 km) |
| Williamstown to Citrus Park (Florida) | 911.93 mi (1,467.61 km) |
| Williamstown to Claiborne (Louisiana) | 1,078.09 mi (1,735.03 km) |
| Williamstown to Claremont (California) | 2,369.55 mi (3,813.42 km) |
| Williamstown to Claremont (New Hampshire) | 289.32 mi (465.61 km) |
| Williamstown to Claremore (Oklahoma) | 1,144.46 mi (1,841.83 km) |
| Williamstown to Clarksburg (Maryland) | 126.14 mi (203.00 km) |
| Williamstown to Clarksburg (West Virginia) | 286.30 mi (460.75 km) |
