| Williamstown to Candler-McAfee (Georgia) | 658.63 mi (1,059.96 km) |
| Williamstown to Caño Martin Peña (Puerto Rico) | 1,562.42 mi (2,514.47 km) |
| Williamstown to Cañon City (Colorado) | 1,616.94 mi (2,602.22 km) |
| Williamstown to Canóvanas (Puerto Rico) | 1,569.53 mi (2,525.92 km) |
| Williamstown to Canton (Georgia) | 645.14 mi (1,038.25 km) |
| Williamstown to Canton (Illinois) | 797.08 mi (1,282.78 km) |
| Williamstown to Canton (Mississippi) | 970.39 mi (1,561.69 km) |
| Williamstown to Canton (Ohio) | 345.62 mi (556.23 km) |
| Williamstown to Canyon (Texas) | 1,509.00 mi (2,428.50 km) |
| Williamstown to Canyon Lake (California) | 2,356.99 mi (3,793.21 km) |
| Williamstown to Canyon Lake (Texas) | 1,478.81 mi (2,379.91 km) |
| Williamstown to Cape Coral (Florida) | 987.51 mi (1,589.24 km) |
| Williamstown to Cape Girardeau (Missouri) | 804.40 mi (1,294.55 km) |
| Williamstown to Carbondale (Illinois) | 779.12 mi (1,253.87 km) |
| Williamstown to Carlisle (Pennsylvania) | 123.06 mi (198.04 km) |
