| Drogheda to Oswego (Illinois) | 3,682.38 mi (5,926.22 km) |
| Drogheda to Oswego (New York) | 3,147.27 mi (5,065.05 km) |
| Drogheda to Otsego (Minnesota) | 3,708.00 mi (5,967.45 km) |
| Drogheda to Ottawa (Illinois) | 3,716.32 mi (5,980.85 km) |
| Drogheda to Ottawa (Kansas) | 4,091.98 mi (6,585.40 km) |
| Drogheda to Ottumwa (Iowa) | 3,866.91 mi (6,223.19 km) |
| Drogheda to Overland (Missouri) | 3,902.96 mi (6,281.20 km) |
| Drogheda to Overland Park (Kansas) | 4,056.16 mi (6,527.76 km) |
| Drogheda to Overlea (Maryland) | 3,330.44 mi (5,359.83 km) |
| Drogheda to Oviedo (Florida) | 4,042.26 mi (6,505.38 km) |
| Drogheda to Owasso (Oklahoma) | 4,230.04 mi (6,807.60 km) |
| Drogheda to Owatonna (Minnesota) | 3,749.44 mi (6,034.14 km) |
| Drogheda to Owensboro (Kentucky) | 3,823.78 mi (6,153.79 km) |
| Drogheda to Owings Mills (Maryland) | 3,339.18 mi (5,373.90 km) |
| Drogheda to Owosso (Michigan) | 3,463.90 mi (5,574.61 km) |
