| Bucharest to Oswego (Illinois) | 5,238.93 mi (8,431.25 km) |
| Bucharest to Oswego (New York) | 4,725.04 mi (7,604.22 km) |
| Bucharest to Otsego (Minnesota) | 5,225.76 mi (8,410.04 km) |
| Bucharest to Ottawa (Illinois) | 5,272.69 mi (8,485.57 km) |
| Bucharest to Ottawa (Kansas) | 5,637.28 mi (9,072.33 km) |
| Bucharest to Ottumwa (Iowa) | 5,412.36 mi (8,710.34 km) |
| Bucharest to Overland (Missouri) | 5,464.68 mi (8,794.55 km) |
| Bucharest to Overland Park (Kansas) | 5,602.46 mi (9,016.28 km) |
| Bucharest to Overlea (Maryland) | 4,914.76 mi (7,909.55 km) |
| Bucharest to Oviedo (Florida) | 5,624.35 mi (9,051.51 km) |
| Bucharest to Owasso (Oklahoma) | 5,782.57 mi (9,306.14 km) |
| Bucharest to Owatonna (Minnesota) | 5,275.87 mi (8,490.69 km) |
| Bucharest to Owensboro (Kentucky) | 5,396.72 mi (8,685.17 km) |
| Bucharest to Owings Mills (Maryland) | 4,923.31 mi (7,923.30 km) |
| Bucharest to Owosso (Michigan) | 5,027.21 mi (8,090.51 km) |
