| Williamstown to Robbinsdale (Minnesota) | 1,004.32 mi (1,616.29 km) |
| Williamstown to Robertsville (New Jersey) | 57.82 mi (93.05 km) |
| Williamstown to Robinson (Texas) | 1,363.48 mi (2,194.31 km) |
| Williamstown to Robstown (Texas) | 1,534.16 mi (2,468.99 km) |
| Williamstown to Rochester (Michigan) | 471.04 mi (758.06 km) |
| Williamstown to Rochester (Minnesota) | 946.79 mi (1,523.72 km) |
| Williamstown to Rochester (New Hampshire) | 324.14 mi (521.65 km) |
| Williamstown to Rochester (New York) | 276.56 mi (445.08 km) |
| Williamstown to Rochester Hills (Michigan) | 472.14 mi (759.83 km) |
| Williamstown to Rock Hill (South Carolina) | 466.56 mi (750.85 km) |
| Williamstown to Rock Island (Illinois) | 826.90 mi (1,330.77 km) |
| Williamstown to Rock Springs (Wyoming) | 1,788.31 mi (2,878.01 km) |
| Williamstown to Rockford (Illinois) | 755.00 mi (1,215.05 km) |
| Williamstown to Rockledge (Florida) | 851.30 mi (1,370.04 km) |
| Williamstown to Rocklin (California) | 2,448.56 mi (3,940.58 km) |
