| Fehmarnsund to Oswego (Illinois) | 4,284.55 mi (6,895.32 km) |
| Fehmarnsund to Oswego (New York) | 3,785.13 mi (6,091.58 km) |
| Fehmarnsund to Otsego (Minnesota) | 4,265.86 mi (6,865.24 km) |
| Fehmarnsund to Ottawa (Illinois) | 4,318.20 mi (6,949.46 km) |
| Fehmarnsund to Ottawa (Kansas) | 4,679.59 mi (7,531.07 km) |
| Fehmarnsund to Ottumwa (Iowa) | 4,454.92 mi (7,169.50 km) |
| Fehmarnsund to Overland (Missouri) | 4,511.85 mi (7,261.12 km) |
| Fehmarnsund to Overland Park (Kansas) | 4,644.98 mi (7,475.38 km) |
| Fehmarnsund to Overlea (Maryland) | 3,987.69 mi (6,417.57 km) |
| Fehmarnsund to Oviedo (Florida) | 4,721.49 mi (7,598.50 km) |
| Fehmarnsund to Owasso (Oklahoma) | 4,826.27 mi (7,767.14 km) |
| Fehmarnsund to Owatonna (Minnesota) | 4,316.29 mi (6,946.40 km) |
| Fehmarnsund to Owensboro (Kentucky) | 4,450.44 mi (7,162.29 km) |
| Fehmarnsund to Owings Mills (Maryland) | 3,995.36 mi (6,429.91 km) |
| Fehmarnsund to Owosso (Michigan) | 4,075.87 mi (6,559.49 km) |
