| Williamstown to Cordele (Georgia) | 725.79 mi (1,168.05 km) |
| Williamstown to Corinth (Mississippi) | 811.57 mi (1,306.10 km) |
| Williamstown to Corinth (Texas) | 1,304.61 mi (2,099.56 km) |
| Williamstown to Cornelius (North Carolina) | 434.87 mi (699.86 km) |
| Williamstown to Cornelius (Oregon) | 2,440.52 mi (3,927.64 km) |
| Williamstown to Corning (New York) | 201.59 mi (324.43 km) |
| Williamstown to Corona (California) | 2,368.48 mi (3,811.70 km) |
| Williamstown to Coronado (California) | 2,379.55 mi (3,829.52 km) |
| Williamstown to Corpus Christi (Texas) | 1,523.10 mi (2,451.19 km) |
| Williamstown to Corsicana (Texas) | 1,308.31 mi (2,105.51 km) |
| Williamstown to Cortland (New York) | 210.72 mi (339.12 km) |
| Williamstown to Corvallis (Oregon) | 2,461.43 mi (3,961.28 km) |
| Williamstown to Coshocton (Ohio) | 365.79 mi (588.68 km) |
| Williamstown to Costa Mesa (California) | 2,392.14 mi (3,849.77 km) |
| Williamstown to Coto de Caza (California) | 2,376.65 mi (3,824.84 km) |
