| Williamstown to Clemson (South Carolina) | 552.31 mi (888.85 km) |
| Williamstown to Clermont (Florida) | 861.17 mi (1,385.92 km) |
| Williamstown to Cleveland (Mississippi) | 962.31 mi (1,548.69 km) |
| Williamstown to Cleveland (Ohio) | 372.65 mi (599.72 km) |
| Williamstown to Cleveland (Tennessee) | 625.11 mi (1,006.02 km) |
| Williamstown to Cleveland Heights (Ohio) | 367.60 mi (591.60 km) |
| Williamstown to Cliffside Park (New Jersey) | 94.21 mi (151.62 km) |
| Williamstown to Clifton (Colorado) | 1,778.13 mi (2,861.62 km) |
| Williamstown to Clifton (New Jersey) | 92.04 mi (148.12 km) |
| Williamstown to Clinton (Iowa) | 811.33 mi (1,305.71 km) |
| Williamstown to Clinton (Maryland) | 121.83 mi (196.07 km) |
| Williamstown to Clinton (Mississippi) | 994.76 mi (1,600.91 km) |
| Williamstown to Clinton (Utah) | 1,938.82 mi (3,120.23 km) |
| Williamstown to Clive (Iowa) | 993.44 mi (1,598.79 km) |
| Williamstown to Cloquet (Minnesota) | 1,003.91 mi (1,615.63 km) |
