| Greenock to Ridgeland (Mississippi) | 4,226.09 mi (6,801.23 km) |
| Greenock to Ridgewood (New Jersey) | 3,190.36 mi (5,134.39 km) |
| Greenock to Rifle (Colorado) | 4,457.75 mi (7,174.06 km) |
| Greenock to Rincon (Georgia) | 3,896.81 mi (6,271.32 km) |
| Greenock to Ringwood (New Jersey) | 3,190.59 mi (5,134.77 km) |
| Greenock to Río Grande (Puerto Rico) | 4,061.66 mi (6,536.61 km) |
| Greenock to Rio Grande City (Texas) | 4,875.85 mi (7,846.93 km) |
| Greenock to Rio Linda (California) | 4,921.87 mi (7,920.98 km) |
| Greenock to Rio Rancho (New Mexico) | 4,657.59 mi (7,495.67 km) |
| Greenock to Rio Rico (Arizona) | 5,014.37 mi (8,069.84 km) |
| Greenock to Ripon (California) | 4,968.45 mi (7,995.95 km) |
| Greenock to River Edge (New Jersey) | 3,190.18 mi (5,134.10 km) |
| Greenock to River Falls (Wisconsin) | 3,674.54 mi (5,913.60 km) |
| Greenock to River Forest (Illinois) | 3,652.70 mi (5,878.45 km) |
| Greenock to River Grove (Illinois) | 3,651.91 mi (5,877.18 km) |
