| Ilmenau to Oswego (Illinois) | 4,421.93 mi (7,116.41 km) |
| Ilmenau to Oswego (New York) | 3,899.74 mi (6,276.03 km) |
| Ilmenau to Otsego (Minnesota) | 4,425.17 mi (7,121.63 km) |
| Ilmenau to Ottawa (Illinois) | 4,455.79 mi (7,170.91 km) |
| Ilmenau to Ottawa (Kansas) | 4,825.40 mi (7,765.74 km) |
| Ilmenau to Ottumwa (Iowa) | 4,600.16 mi (7,403.24 km) |
| Ilmenau to Overland (Missouri) | 4,645.74 mi (7,476.60 km) |
| Ilmenau to Overland Park (Kansas) | 4,790.11 mi (7,708.94 km) |
| Ilmenau to Overlea (Maryland) | 4,087.76 mi (6,578.61 km) |
| Ilmenau to Oviedo (Florida) | 4,800.34 mi (7,725.40 km) |
| Ilmenau to Owasso (Oklahoma) | 4,967.73 mi (7,994.79 km) |
| Ilmenau to Owatonna (Minnesota) | 4,471.62 mi (7,196.38 km) |
| Ilmenau to Owensboro (Kentucky) | 4,573.32 mi (7,360.05 km) |
| Ilmenau to Owings Mills (Maryland) | 4,096.32 mi (6,592.39 km) |
| Ilmenau to Owosso (Michigan) | 4,207.34 mi (6,771.05 km) |
