| East Islip to Romeoville (Illinois) | 777.07 mi (1,250.57 km) |
| East Islip to Romulus (Michigan) | 536.67 mi (863.69 km) |
| East Islip to Ronkonkoma (New York) | 6.30 mi (10.14 km) |
| East Islip to Roosevelt (New York) | 21.03 mi (33.84 km) |
| East Islip to Rosamond (California) | 2,464.26 mi (3,965.84 km) |
| East Islip to Rosaryville (Maryland) | 235.97 mi (379.76 km) |
| East Islip to Roscoe (Illinois) | 824.93 mi (1,327.59 km) |
| East Islip to Rose Hill (Virginia) | 247.61 mi (398.49 km) |
| East Islip to Roseburg (Oregon) | 2,543.73 mi (4,093.74 km) |
| East Islip to Rosedale (California) | 2,501.78 mi (4,026.23 km) |
| East Islip to Rosedale (Maryland) | 200.55 mi (322.75 km) |
| East Islip to Roselle (Illinois) | 776.60 mi (1,249.81 km) |
| East Islip to Roselle (New Jersey) | 56.44 mi (90.83 km) |
| East Islip to Roselle Park (New Jersey) | 56.71 mi (91.27 km) |
| East Islip to Rosemead (California) | 2,479.39 mi (3,990.19 km) |
