| East Islip to Ridgeland (Mississippi) | 1,099.25 mi (1,769.07 km) |
| East Islip to Ridgewood (New Jersey) | 51.52 mi (82.92 km) |
| East Islip to Rifle (Colorado) | 1,817.08 mi (2,924.30 km) |
| East Islip to Rincon (Georgia) | 733.51 mi (1,180.47 km) |
| East Islip to Ringwood (New Jersey) | 62.60 mi (100.75 km) |
| East Islip to Río Grande (Puerto Rico) | 1,604.39 mi (2,582.02 km) |
| East Islip to Rio Grande City (Texas) | 1,767.28 mi (2,844.17 km) |
| East Islip to Rio Linda (California) | 2,536.33 mi (4,081.83 km) |
| East Islip to Rio Rancho (New Mexico) | 1,850.93 mi (2,978.79 km) |
| East Islip to Rio Rico (Arizona) | 2,185.51 mi (3,517.24 km) |
| East Islip to Ripon (California) | 2,542.22 mi (4,091.31 km) |
| East Islip to River Edge (New Jersey) | 46.65 mi (75.08 km) |
| East Islip to River Falls (Wisconsin) | 1,023.26 mi (1,646.78 km) |
| East Islip to River Forest (Illinois) | 762.76 mi (1,227.54 km) |
| East Islip to River Grove (Illinois) | 763.75 mi (1,229.14 km) |
