| Greenock to Robertsville (New Jersey) | 3,227.88 mi (5,194.78 km) |
| Greenock to Robinson (Texas) | 4,534.40 mi (7,297.41 km) |
| Greenock to Robstown (Texas) | 4,755.20 mi (7,652.76 km) |
| Greenock to Rochester (Michigan) | 3,444.13 mi (5,542.79 km) |
| Greenock to Rochester (Minnesota) | 3,711.42 mi (5,972.95 km) |
| Greenock to Rochester (New Hampshire) | 2,963.89 mi (4,769.93 km) |
| Greenock to Rochester (New York) | 3,218.84 mi (5,180.22 km) |
| Greenock to Rochester Hills (Michigan) | 3,446.52 mi (5,546.65 km) |
| Greenock to Rock Hill (South Carolina) | 3,751.64 mi (6,037.69 km) |
| Greenock to Rock Island (Illinois) | 3,772.48 mi (6,071.21 km) |
| Greenock to Rock Springs (Wyoming) | 4,390.48 mi (7,065.80 km) |
| Greenock to Rockford (Illinois) | 3,679.06 mi (5,920.87 km) |
| Greenock to Rockledge (Florida) | 4,087.99 mi (6,578.98 km) |
| Greenock to Rocklin (California) | 4,909.33 mi (7,900.81 km) |
| Greenock to Rockport (Texas) | 4,720.32 mi (7,596.62 km) |
