| Forfar to Oak Harbor (Washington) | 4,405.41 mi (7,089.83 km) |
| Forfar to Oak Hills (Oregon) | 4,572.48 mi (7,358.69 km) |
| Forfar to Oak Lawn (Illinois) | 3,707.72 mi (5,967.01 km) |
| Forfar to Oak Park (California) | 5,132.85 mi (8,260.53 km) |
| Forfar to Oak Park (Illinois) | 3,700.25 mi (5,954.97 km) |
| Forfar to Oak Park (Michigan) | 3,508.52 mi (5,646.42 km) |
| Forfar to Oak Ridge (Florida) | 4,171.46 mi (6,713.31 km) |
| Forfar to Oak Ridge (New Jersey) | 3,262.49 mi (5,250.47 km) |
| Forfar to Oak Ridge (Tennessee) | 3,879.49 mi (6,243.44 km) |
| Forfar to Oakdale (California) | 4,980.15 mi (8,014.77 km) |
| Forfar to Oakdale (Minnesota) | 3,720.26 mi (5,987.19 km) |
| Forfar to Oakland (California) | 5,016.32 mi (8,072.99 km) |
| Forfar to Oakland (New Jersey) | 3,253.04 mi (5,235.26 km) |
| Forfar to Oakland Park (Florida) | 4,248.74 mi (6,837.69 km) |
| Forfar to Oakleaf Plantation (Florida) | 4,095.52 mi (6,591.10 km) |
