| Drogheda to Orangevale (California) | 4,972.27 mi (8,002.09 km) |
| Drogheda to Orchards (Washington) | 4,613.37 mi (7,424.50 km) |
| Drogheda to Orcutt (California) | 5,165.63 mi (8,313.28 km) |
| Drogheda to Oregon (Ohio) | 3,496.77 mi (5,627.51 km) |
| Drogheda to Oregon (Wisconsin) | 3,663.44 mi (5,895.73 km) |
| Drogheda to Oregon City (Oregon) | 4,634.69 mi (7,458.81 km) |
| Drogheda to Orem (Utah) | 4,581.15 mi (7,372.64 km) |
| Drogheda to Orinda (California) | 5,047.59 mi (8,123.31 km) |
| Drogheda to Orland Park (Illinois) | 3,668.00 mi (5,903.08 km) |
| Drogheda to Orlando (Florida) | 4,057.62 mi (6,530.10 km) |
| Drogheda to Ormond Beach (Florida) | 4,005.99 mi (6,447.01 km) |
| Drogheda to Oro Valley (Arizona) | 4,987.10 mi (8,025.97 km) |
| Drogheda to Oroville (California) | 4,936.35 mi (7,944.28 km) |
| Drogheda to Oshkosh (Wisconsin) | 3,581.77 mi (5,764.29 km) |
| Drogheda to Oskaloosa (Iowa) | 3,861.92 mi (6,215.16 km) |
