| South Plainfield to Ridgefield Park (New Jersey) | 28.30 mi (45.55 km) |
| South Plainfield to Ridgeland (Mississippi) | 1,037.14 mi (1,669.11 km) |
| South Plainfield to Ridgewood (New Jersey) | 32.29 mi (51.96 km) |
| South Plainfield to Rifle (Colorado) | 1,755.02 mi (2,824.44 km) |
| South Plainfield to Rincon (Georgia) | 685.79 mi (1,103.67 km) |
| South Plainfield to Ringwood (New Jersey) | 37.46 mi (60.29 km) |
| South Plainfield to Río Grande (Puerto Rico) | 1,615.96 mi (2,600.63 km) |
| South Plainfield to Rio Grande City (Texas) | 1,705.13 mi (2,744.14 km) |
| South Plainfield to Rio Linda (California) | 2,475.88 mi (3,984.54 km) |
| South Plainfield to Rio Rancho (New Mexico) | 1,786.36 mi (2,874.88 km) |
| South Plainfield to Rio Rico (Arizona) | 2,120.45 mi (3,412.54 km) |
| South Plainfield to Ripon (California) | 2,481.09 mi (3,992.93 km) |
| South Plainfield to River Edge (New Jersey) | 31.31 mi (50.39 km) |
| South Plainfield to River Falls (Wisconsin) | 968.20 mi (1,558.17 km) |
| South Plainfield to River Forest (Illinois) | 701.68 mi (1,129.25 km) |
