| Greenock to Romeoville (Illinois) | 3,675.81 mi (5,915.65 km) |
| Greenock to Romulus (Michigan) | 3,475.46 mi (5,593.21 km) |
| Greenock to Ronkonkoma (New York) | 3,161.34 mi (5,087.69 km) |
| Greenock to Roosevelt (New York) | 3,184.68 mi (5,125.24 km) |
| Greenock to Rosamond (California) | 5,050.23 mi (8,127.56 km) |
| Greenock to Rosaryville (Maryland) | 3,400.22 mi (5,472.13 km) |
| Greenock to Roscoe (Illinois) | 3,668.85 mi (5,904.44 km) |
| Greenock to Rose Hill (Virginia) | 3,409.92 mi (5,487.73 km) |
| Greenock to Roseburg (Oregon) | 4,708.63 mi (7,577.81 km) |
| Greenock to Rosedale (California) | 5,049.64 mi (8,126.61 km) |
| Greenock to Rosedale (Maryland) | 3,360.79 mi (5,408.67 km) |
| Greenock to Roselle (Illinois) | 3,658.00 mi (5,886.98 km) |
| Greenock to Roselle (New Jersey) | 3,211.62 mi (5,168.60 km) |
| Greenock to Roselle Park (New Jersey) | 3,211.27 mi (5,168.04 km) |
| Greenock to Rosemead (California) | 5,092.63 mi (8,195.80 km) |
