| Greenock to Red Bank (New Jersey) | 3,218.87 mi (5,180.27 km) |
| Greenock to Red Bank (Tennessee) | 3,903.90 mi (6,282.73 km) |
| Greenock to Red Bluff (California) | 4,857.20 mi (7,816.91 km) |
| Greenock to Red Hill (South Carolina) | 3,734.83 mi (6,010.63 km) |
| Greenock to Red Oak (Texas) | 4,464.09 mi (7,184.26 km) |
| Greenock to Red Wing (Minnesota) | 3,687.63 mi (5,934.67 km) |
| Greenock to Redan (Georgia) | 3,932.63 mi (6,328.95 km) |
| Greenock to Redding (California) | 4,837.38 mi (7,785.02 km) |
| Greenock to Redland (Maryland) | 3,394.35 mi (5,462.68 km) |
| Greenock to Redlands (California) | 5,065.60 mi (8,152.30 km) |
| Greenock to Redmond (Oregon) | 4,589.85 mi (7,386.65 km) |
| Greenock to Redmond (Washington) | 4,417.55 mi (7,109.36 km) |
| Greenock to Redondo Beach (California) | 5,113.98 mi (8,230.15 km) |
| Greenock to Redwood City (California) | 5,013.92 mi (8,069.13 km) |
| Greenock to Reedley (California) | 4,986.12 mi (8,024.38 km) |
