| Williamstown to Carlsbad (California) | 2,373.34 mi (3,819.52 km) |
| Williamstown to Carlsbad (New Mexico) | 1,701.71 mi (2,738.64 km) |
| Williamstown to Carmel (Indiana) | 592.50 mi (953.54 km) |
| Williamstown to Carmichael (California) | 2,456.03 mi (3,952.59 km) |
| Williamstown to Carney (Maryland) | 84.59 mi (136.13 km) |
| Williamstown to Carnot-Moon (Pennsylvania) | 282.73 mi (455.01 km) |
| Williamstown to Carol Stream (Illinois) | 704.16 mi (1,133.23 km) |
| Williamstown to Carolina (Puerto Rico) | 1,565.56 mi (2,519.52 km) |
| Williamstown to Carolina Forest (South Carolina) | 463.45 mi (745.86 km) |
| Williamstown to Carpentersville (Illinois) | 714.36 mi (1,149.66 km) |
| Williamstown to Carpinteria (California) | 2,457.69 mi (3,955.28 km) |
| Williamstown to Carrboro (North Carolina) | 343.23 mi (552.37 km) |
| Williamstown to Carroll (Iowa) | 1,049.37 mi (1,688.80 km) |
| Williamstown to Carrollton (Georgia) | 700.57 mi (1,127.45 km) |
| Williamstown to Carrollton (Texas) | 1,300.73 mi (2,093.32 km) |
