| Grays to Oak Harbor (Washington) | 4,766.33 mi (7,670.67 km) |
| Grays to Oak Hills (Oregon) | 4,930.18 mi (7,934.36 km) |
| Grays to Oak Lawn (Illinois) | 3,978.35 mi (6,402.54 km) |
| Grays to Oak Park (California) | 5,465.62 mi (8,796.06 km) |
| Grays to Oak Park (Illinois) | 3,971.68 mi (6,391.80 km) |
| Grays to Oak Park (Michigan) | 3,768.51 mi (6,064.84 km) |
| Grays to Oak Ridge (Florida) | 4,363.65 mi (7,022.61 km) |
| Grays to Oak Ridge (New Jersey) | 3,486.71 mi (5,611.32 km) |
| Grays to Oak Ridge (Tennessee) | 4,114.99 mi (6,622.43 km) |
| Grays to Oakdale (California) | 5,323.33 mi (8,567.07 km) |
| Grays to Oakdale (Minnesota) | 4,017.47 mi (6,465.49 km) |
| Grays to Oakland (California) | 5,362.23 mi (8,629.67 km) |
| Grays to Oakland (New Jersey) | 3,476.34 mi (5,594.62 km) |
| Grays to Oakland Park (Florida) | 4,425.55 mi (7,122.23 km) |
| Grays to Oakleaf Plantation (Florida) | 4,296.72 mi (6,914.91 km) |
