| Mountain Ash to Oak Harbor (Washington) | 4,657.38 mi (7,495.32 km) |
| Mountain Ash to Oak Hills (Oregon) | 4,818.11 mi (7,753.99 km) |
| Mountain Ash to Oak Lawn (Illinois) | 3,829.70 mi (6,163.30 km) |
| Mountain Ash to Oak Park (California) | 5,336.55 mi (8,588.34 km) |
| Mountain Ash to Oak Park (Illinois) | 3,823.21 mi (6,152.86 km) |
| Mountain Ash to Oak Park (Michigan) | 3,617.87 mi (5,822.40 km) |
| Mountain Ash to Oak Ridge (Florida) | 4,204.74 mi (6,766.87 km) |
| Mountain Ash to Oak Ridge (New Jersey) | 3,330.87 mi (5,360.52 km) |
| Mountain Ash to Oak Ridge (Tennessee) | 3,960.15 mi (6,373.24 km) |
| Mountain Ash to Oakdale (California) | 5,200.24 mi (8,368.97 km) |
| Mountain Ash to Oakdale (Minnesota) | 3,875.70 mi (6,237.34 km) |
| Mountain Ash to Oakland (California) | 5,240.84 mi (8,434.31 km) |
| Mountain Ash to Oakland (New Jersey) | 3,320.40 mi (5,343.66 km) |
| Mountain Ash to Oakland Park (Florida) | 4,265.99 mi (6,865.44 km) |
| Mountain Ash to Oakleaf Plantation (Florida) | 4,138.39 mi (6,660.09 km) |
