| Williamstown to Cullman (Alabama) | 756.76 mi (1,217.89 km) |
| Williamstown to Culpeper (Virginia) | 182.56 mi (293.80 km) |
| Williamstown to Culver City (California) | 2,408.80 mi (3,876.59 km) |
| Williamstown to Cumberland (Maryland) | 201.02 mi (323.52 km) |
| Williamstown to Cupertino (California) | 2,521.01 mi (4,057.17 km) |
| Williamstown to Cutler Bay (Florida) | 1,023.04 mi (1,646.42 km) |
| Williamstown to Cutlerville (Michigan) | 596.09 mi (959.32 km) |
| Williamstown to Cuyahoga Falls (Ohio) | 358.80 mi (577.43 km) |
| Williamstown to Cypress (California) | 2,394.78 mi (3,854.02 km) |
| Williamstown to Cypress Gardens (Florida) | 893.62 mi (1,438.15 km) |
| Williamstown to Cypress Lake (Florida) | 992.00 mi (1,596.47 km) |
| Williamstown to D'Iberville (Mississippi) | 1,010.40 mi (1,626.07 km) |
| Williamstown to Dakota Ridge (Colorado) | 1,596.53 mi (2,569.37 km) |
| Williamstown to Dale City (Virginia) | 145.75 mi (234.56 km) |
| Williamstown to Dallas (Georgia) | 675.18 mi (1,086.60 km) |
