| Williamstown to Decatur (Alabama) | 749.21 mi (1,205.74 km) |
| Williamstown to Decatur (Georgia) | 657.64 mi (1,058.37 km) |
| Williamstown to Decatur (Illinois) | 740.45 mi (1,191.64 km) |
| Williamstown to Deer Park (New York) | 114.69 mi (184.58 km) |
| Williamstown to Deer Park (Texas) | 1,331.69 mi (2,143.15 km) |
| Williamstown to Deerfield (Illinois) | 692.73 mi (1,114.84 km) |
| Williamstown to Deerfield Beach (Florida) | 971.10 mi (1,562.84 km) |
| Williamstown to Defiance (Ohio) | 505.17 mi (812.99 km) |
| Williamstown to DeForest (Wisconsin) | 781.86 mi (1,258.28 km) |
| Williamstown to DeKalb (Illinois) | 735.72 mi (1,184.03 km) |
| Williamstown to Del Aire (California) | 2,409.68 mi (3,878.01 km) |
| Williamstown to Del City (Oklahoma) | 1,260.91 mi (2,029.23 km) |
| Williamstown to Del Rio (Texas) | 1,629.58 mi (2,622.55 km) |
| Williamstown to DeLand (Florida) | 819.48 mi (1,318.82 km) |
| Williamstown to Delano (California) | 2,410.68 mi (3,879.62 km) |
