| Drogheda to Oak Harbor (Washington) | 4,469.74 mi (7,193.35 km) |
| Drogheda to Oak Hills (Oregon) | 4,630.41 mi (7,451.93 km) |
| Drogheda to Oak Lawn (Illinois) | 3,658.87 mi (5,888.39 km) |
| Drogheda to Oak Park (California) | 5,151.54 mi (8,290.60 km) |
| Drogheda to Oak Park (Illinois) | 3,652.14 mi (5,877.55 km) |
| Drogheda to Oak Park (Michigan) | 3,450.02 mi (5,552.27 km) |
| Drogheda to Oak Ridge (Florida) | 4,061.10 mi (6,535.71 km) |
| Drogheda to Oak Ridge (New Jersey) | 3,174.39 mi (5,108.68 km) |
| Drogheda to Oak Ridge (Tennessee) | 3,800.69 mi (6,116.61 km) |
| Drogheda to Oakdale (California) | 5,013.63 mi (8,068.65 km) |
| Drogheda to Oakdale (Minnesota) | 3,697.58 mi (5,950.68 km) |
| Drogheda to Oakland (California) | 5,053.92 mi (8,133.50 km) |
| Drogheda to Oakland (New Jersey) | 3,164.22 mi (5,092.32 km) |
| Drogheda to Oakland Park (Florida) | 4,128.29 mi (6,643.84 km) |
| Drogheda to Oakleaf Plantation (Florida) | 3,991.31 mi (6,423.39 km) |
