| Greenock to Oak Harbor (Washington) | 4,395.06 mi (7,073.17 km) |
| Greenock to Oak Hills (Oregon) | 4,559.88 mi (7,338.42 km) |
| Greenock to Oak Lawn (Illinois) | 3,659.28 mi (5,889.05 km) |
| Greenock to Oak Park (California) | 5,106.76 mi (8,218.54 km) |
| Greenock to Oak Park (Illinois) | 3,652.03 mi (5,877.37 km) |
| Greenock to Oak Park (Michigan) | 3,457.10 mi (5,563.66 km) |
| Greenock to Oak Ridge (Florida) | 4,106.02 mi (6,608.00 km) |
| Greenock to Oak Ridge (New Jersey) | 3,202.53 mi (5,153.97 km) |
| Greenock to Oak Ridge (Tennessee) | 3,822.45 mi (6,151.63 km) |
| Greenock to Oakdale (California) | 4,959.07 mi (7,980.85 km) |
| Greenock to Oakdale (Minnesota) | 3,679.88 mi (5,922.19 km) |
| Greenock to Oakland (California) | 4,996.70 mi (8,041.41 km) |
| Greenock to Oakland (New Jersey) | 3,192.87 mi (5,138.43 km) |
| Greenock to Oakland Park (Florida) | 4,180.76 mi (6,728.28 km) |
| Greenock to Oakleaf Plantation (Florida) | 4,031.66 mi (6,488.33 km) |
