| Williamstown to Rowlett (Texas) | 1,284.97 mi (2,067.96 km) |
| Williamstown to Roy (Utah) | 1,937.58 mi (3,118.24 km) |
| Williamstown to Royal Kunia (Hawaii) | 4,930.09 mi (7,934.21 km) |
| Williamstown to Royal Oak (Michigan) | 467.90 mi (753.02 km) |
| Williamstown to Royal Palm Beach (Florida) | 946.47 mi (1,523.20 km) |
| Williamstown to Royse City (Texas) | 1,271.13 mi (2,045.69 km) |
| Williamstown to Ruskin (Florida) | 930.94 mi (1,498.20 km) |
| Williamstown to Russellville (Alabama) | 787.55 mi (1,267.44 km) |
| Williamstown to Russellville (Arkansas) | 1,039.14 mi (1,672.34 km) |
| Williamstown to Ruston (Louisiana) | 1,099.95 mi (1,770.20 km) |
| Williamstown to Rutherford (New Jersey) | 90.80 mi (146.14 km) |
| Williamstown to Rutland (Vermont) | 289.96 mi (466.64 km) |
| Williamstown to Sabana Grande (Puerto Rico) | 1,567.73 mi (2,523.02 km) |
| Williamstown to Sachse (Texas) | 1,284.72 mi (2,067.56 km) |
| Williamstown to Saco (Maine) | 353.79 mi (569.36 km) |
