| Grenada to Romeoville (Illinois) | 550.39 mi (885.76 km) |
| Grenada to Romulus (Michigan) | 680.26 mi (1,094.77 km) |
| Grenada to Ronkonkoma (New York) | 1,035.27 mi (1,666.11 km) |
| Grenada to Roosevelt (New York) | 1,009.79 mi (1,625.11 km) |
| Grenada to Rosamond (California) | 1,617.01 mi (2,602.33 km) |
| Grenada to Rosaryville (Maryland) | 800.18 mi (1,287.76 km) |
| Grenada to Roscoe (Illinois) | 598.83 mi (963.73 km) |
| Grenada to Rose Hill (Virginia) | 786.60 mi (1,265.90 km) |
| Grenada to Roseburg (Oregon) | 1,911.98 mi (3,077.04 km) |
| Grenada to Rosedale (California) | 1,669.52 mi (2,686.83 km) |
| Grenada to Rosedale (Maryland) | 830.70 mi (1,336.89 km) |
| Grenada to Roselle (Illinois) | 574.25 mi (924.17 km) |
| Grenada to Roselle (New Jersey) | 976.56 mi (1,571.62 km) |
| Grenada to Roselle Park (New Jersey) | 976.60 mi (1,571.68 km) |
| Grenada to Rosemead (California) | 1,615.63 mi (2,600.11 km) |
