| Ronkonkoma to Ridgefield Park (New Jersey) | 46.95 mi (75.55 km) |
| Ronkonkoma to Ridgeland (Mississippi) | 1,104.55 mi (1,777.60 km) |
| Ronkonkoma to Ridgewood (New Jersey) | 53.06 mi (85.39 km) |
| Ronkonkoma to Rifle (Colorado) | 1,819.48 mi (2,928.16 km) |
| Ronkonkoma to Rincon (Georgia) | 739.73 mi (1,190.49 km) |
| Ronkonkoma to Ringwood (New Jersey) | 63.56 mi (102.30 km) |
| Ronkonkoma to Río Grande (Puerto Rico) | 1,608.53 mi (2,588.67 km) |
| Ronkonkoma to Rio Grande City (Texas) | 1,772.59 mi (2,852.70 km) |
| Ronkonkoma to Rio Linda (California) | 2,538.30 mi (4,085.00 km) |
| Ronkonkoma to Rio Rancho (New Mexico) | 1,854.27 mi (2,984.17 km) |
| Ronkonkoma to Rio Rico (Arizona) | 2,189.21 mi (3,523.20 km) |
| Ronkonkoma to Ripon (California) | 2,544.36 mi (4,094.75 km) |
| Ronkonkoma to River Edge (New Jersey) | 48.52 mi (78.08 km) |
| Ronkonkoma to River Falls (Wisconsin) | 1,024.21 mi (1,648.31 km) |
| Ronkonkoma to River Forest (Illinois) | 764.96 mi (1,231.09 km) |
