| Greenock to Rockville (Maryland) | 3,397.16 mi (5,467.20 km) |
| Greenock to Rockville Centre (New York) | 3,187.48 mi (5,129.76 km) |
| Greenock to Rockwall (Texas) | 4,430.06 mi (7,129.49 km) |
| Greenock to Rocky Mount (North Carolina) | 3,576.87 mi (5,756.42 km) |
| Greenock to Rocky Point (New York) | 3,147.93 mi (5,066.11 km) |
| Greenock to Rocky River (Ohio) | 3,456.44 mi (5,562.61 km) |
| Greenock to Roessleville (New York) | 3,097.93 mi (4,985.63 km) |
| Greenock to Rogers (Arkansas) | 4,166.01 mi (6,704.54 km) |
| Greenock to Rogers (Minnesota) | 3,690.94 mi (5,939.99 km) |
| Greenock to Rohnert Park (California) | 4,977.41 mi (8,010.36 km) |
| Greenock to Rolla (Missouri) | 3,994.74 mi (6,428.91 km) |
| Greenock to Rolling Meadows (Illinois) | 3,651.17 mi (5,875.99 km) |
| Greenock to Roma (Texas) | 4,880.62 mi (7,854.60 km) |
| Greenock to Rome (Georgia) | 3,943.67 mi (6,346.72 km) |
| Greenock to Rome (New York) | 3,136.98 mi (5,048.49 km) |
