| Grevenmacher to Orangevale (California) | 5,550.18 mi (8,932.15 km) |
| Grevenmacher to Orchards (Washington) | 5,171.84 mi (8,323.28 km) |
| Grevenmacher to Orcutt (California) | 5,752.51 mi (9,257.78 km) |
| Grevenmacher to Oregon (Ohio) | 4,109.87 mi (6,614.19 km) |
| Grevenmacher to Oregon (Wisconsin) | 4,276.36 mi (6,882.13 km) |
| Grevenmacher to Oregon City (Oregon) | 5,193.88 mi (8,358.75 km) |
| Grevenmacher to Orem (Utah) | 5,175.64 mi (8,329.39 km) |
| Grevenmacher to Orinda (California) | 5,624.76 mi (9,052.17 km) |
| Grevenmacher to Orland Park (Illinois) | 4,281.51 mi (6,890.42 km) |
| Grevenmacher to Orlando (Florida) | 4,651.34 mi (7,485.61 km) |
| Grevenmacher to Ormond Beach (Florida) | 4,600.95 mi (7,404.52 km) |
| Grevenmacher to Oro Valley (Arizona) | 5,593.25 mi (9,001.46 km) |
| Grevenmacher to Oroville (California) | 5,511.76 mi (8,870.31 km) |
| Grevenmacher to Oshkosh (Wisconsin) | 4,194.43 mi (6,750.29 km) |
| Grevenmacher to Oskaloosa (Iowa) | 4,474.53 mi (7,201.06 km) |
