| Williamstown to Rockport (Texas) | 1,495.49 mi (2,406.75 km) |
| Williamstown to Rockville (Maryland) | 123.50 mi (198.75 km) |
| Williamstown to Rockville Centre (New York) | 97.79 mi (157.37 km) |
| Williamstown to Rockwall (Texas) | 1,279.19 mi (2,058.66 km) |
| Williamstown to Rocky Mount (North Carolina) | 299.62 mi (482.20 km) |
| Williamstown to Rocky Point (New York) | 137.89 mi (221.91 km) |
| Williamstown to Rocky River (Ohio) | 381.04 mi (613.23 km) |
| Williamstown to Roessleville (New York) | 216.82 mi (348.94 km) |
| Williamstown to Rogers (Arkansas) | 1,067.38 mi (1,717.77 km) |
| Williamstown to Rogers (Minnesota) | 1,018.76 mi (1,639.53 km) |
| Williamstown to Rohnert Park (California) | 2,532.62 mi (4,075.85 km) |
| Williamstown to Rolla (Missouri) | 910.07 mi (1,464.61 km) |
| Williamstown to Rolling Meadows (Illinois) | 700.45 mi (1,127.27 km) |
| Williamstown to Roma (Texas) | 1,657.92 mi (2,668.17 km) |
| Williamstown to Rome (Georgia) | 675.88 mi (1,087.73 km) |
