| Ronkonkoma to Rome (New York) | 206.78 mi (332.78 km) |
| Ronkonkoma to Romeoville (Illinois) | 779.41 mi (1,254.34 km) |
| Ronkonkoma to Romulus (Michigan) | 538.52 mi (866.66 km) |
| Ronkonkoma to Roosevelt (New York) | 25.51 mi (41.06 km) |
| Ronkonkoma to Rosamond (California) | 2,467.00 mi (3,970.26 km) |
| Ronkonkoma to Rosaryville (Maryland) | 241.69 mi (388.97 km) |
| Ronkonkoma to Roscoe (Illinois) | 826.87 mi (1,330.72 km) |
| Ronkonkoma to Rose Hill (Virginia) | 253.22 mi (407.51 km) |
| Ronkonkoma to Roseburg (Oregon) | 2,544.85 mi (4,095.54 km) |
| Ronkonkoma to Rosedale (California) | 2,504.39 mi (4,030.42 km) |
| Ronkonkoma to Rosedale (Maryland) | 205.97 mi (331.47 km) |
| Ronkonkoma to Roselle (Illinois) | 778.76 mi (1,253.29 km) |
| Ronkonkoma to Roselle (New Jersey) | 60.35 mi (97.13 km) |
| Ronkonkoma to Roselle Park (New Jersey) | 60.55 mi (97.44 km) |
| Ronkonkoma to Rosemead (California) | 2,482.26 mi (3,994.81 km) |
