| Grevenmacher to Oswego (Illinois) | 4,295.84 mi (6,913.49 km) |
| Grevenmacher to Oswego (New York) | 3,758.87 mi (6,049.31 km) |
| Grevenmacher to Otsego (Minnesota) | 4,316.91 mi (6,947.40 km) |
| Grevenmacher to Ottawa (Illinois) | 4,329.78 mi (6,968.11 km) |
| Grevenmacher to Ottawa (Kansas) | 4,704.86 mi (7,571.74 km) |
| Grevenmacher to Ottumwa (Iowa) | 4,479.72 mi (7,209.41 km) |
| Grevenmacher to Overland (Missouri) | 4,516.47 mi (7,268.55 km) |
| Grevenmacher to Overland Park (Kansas) | 4,669.11 mi (7,514.21 km) |
| Grevenmacher to Overlea (Maryland) | 3,937.08 mi (6,336.12 km) |
| Grevenmacher to Oviedo (Florida) | 4,636.07 mi (7,461.03 km) |
| Grevenmacher to Owasso (Oklahoma) | 4,843.42 mi (7,794.74 km) |
| Grevenmacher to Owatonna (Minnesota) | 4,359.81 mi (7,016.44 km) |
| Grevenmacher to Owensboro (Kentucky) | 4,436.33 mi (7,139.58 km) |
| Grevenmacher to Owings Mills (Maryland) | 3,946.17 mi (6,350.75 km) |
| Grevenmacher to Owosso (Michigan) | 4,077.40 mi (6,561.95 km) |
