| Williamstown to Ridgefield Park (New Jersey) | 95.15 mi (153.13 km) |
| Williamstown to Ridgeland (Mississippi) | 982.81 mi (1,581.68 km) |
| Williamstown to Ridgewood (New Jersey) | 100.41 mi (161.59 km) |
| Williamstown to Rifle (Colorado) | 1,735.75 mi (2,793.42 km) |
| Williamstown to Rincon (Georgia) | 618.68 mi (995.67 km) |
| Williamstown to Ringwood (New Jersey) | 104.81 mi (168.67 km) |
| Williamstown to Río Grande (Puerto Rico) | 1,570.19 mi (2,526.97 km) |
| Williamstown to Rio Grande City (Texas) | 1,650.71 mi (2,656.57 km) |
| Williamstown to Rio Linda (California) | 2,460.88 mi (3,960.41 km) |
| Williamstown to Rio Rancho (New Mexico) | 1,755.97 mi (2,825.96 km) |
| Williamstown to Rio Rico (Arizona) | 2,085.53 mi (3,356.34 km) |
| Williamstown to Ripon (California) | 2,464.17 mi (3,965.70 km) |
| Williamstown to River Edge (New Jersey) | 98.93 mi (159.21 km) |
| Williamstown to River Falls (Wisconsin) | 967.88 mi (1,557.66 km) |
| Williamstown to River Forest (Illinois) | 688.09 mi (1,107.37 km) |
