| Grenada to Robertsville (New Jersey) | 966.27 mi (1,555.06 km) |
| Grenada to Robinson (Texas) | 454.60 mi (731.62 km) |
| Grenada to Robstown (Texas) | 622.98 mi (1,002.58 km) |
| Grenada to Rochester (Michigan) | 713.93 mi (1,148.96 km) |
| Grenada to Rochester (Minnesota) | 721.35 mi (1,160.90 km) |
| Grenada to Rochester (New Hampshire) | 1,207.43 mi (1,943.17 km) |
| Grenada to Rochester (New York) | 923.26 mi (1,485.84 km) |
| Grenada to Rochester Hills (Michigan) | 711.65 mi (1,145.28 km) |
| Grenada to Rock Hill (South Carolina) | 507.47 mi (816.70 km) |
| Grenada to Rock Island (Illinois) | 532.87 mi (857.57 km) |
| Grenada to Rock Springs (Wyoming) | 1,186.83 mi (1,910.02 km) |
| Grenada to Rockford (Illinois) | 587.18 mi (944.98 km) |
| Grenada to Rockledge (Florida) | 656.09 mi (1,055.87 km) |
| Grenada to Rocklin (California) | 1,775.58 mi (2,857.52 km) |
| Grenada to Rockport (Texas) | 585.48 mi (942.24 km) |
