| Williamstown to Cloverleaf (Texas) | 1,330.41 mi (2,141.09 km) |
| Williamstown to Cloverly (Maryland) | 115.12 mi (185.27 km) |
| Williamstown to Clovis (California) | 2,408.38 mi (3,875.91 km) |
| Williamstown to Clovis (New Mexico) | 1,590.21 mi (2,559.19 km) |
| Williamstown to Clute (Texas) | 1,372.99 mi (2,209.62 km) |
| Williamstown to Coachella (California) | 2,297.52 mi (3,697.51 km) |
| Williamstown to Coalinga (California) | 2,457.62 mi (3,955.16 km) |
| Williamstown to Coamo (Puerto Rico) | 1,579.51 mi (2,541.98 km) |
| Williamstown to Coatesville (Pennsylvania) | 49.15 mi (79.09 km) |
| Williamstown to Cockeysville (Maryland) | 89.06 mi (143.33 km) |
| Williamstown to Cocoa (Florida) | 848.03 mi (1,364.77 km) |
| Williamstown to Cocoa Beach (Florida) | 848.13 mi (1,364.93 km) |
| Williamstown to Coconut Creek (Florida) | 973.74 mi (1,567.08 km) |
| Williamstown to Coeur d'Alene (Idaho) | 2,132.96 mi (3,432.67 km) |
| Williamstown to Cohoes (New York) | 223.19 mi (359.20 km) |
