| Bucharest to Orangevale (California) | 6,343.40 mi (10,208.72 km) |
| Bucharest to Orchards (Washington) | 5,921.15 mi (9,529.17 km) |
| Bucharest to Orcutt (California) | 6,569.07 mi (10,571.89 km) |
| Bucharest to Oregon (Ohio) | 5,066.63 mi (8,153.96 km) |
| Bucharest to Oregon (Wisconsin) | 5,211.02 mi (8,386.33 km) |
| Bucharest to Oregon City (Oregon) | 5,944.53 mi (9,566.79 km) |
| Bucharest to Orem (Utah) | 6,023.14 mi (9,693.31 km) |
| Bucharest to Orinda (California) | 6,414.76 mi (10,323.57 km) |
| Bucharest to Orland Park (Illinois) | 5,226.32 mi (8,410.95 km) |
| Bucharest to Orlando (Florida) | 5,639.66 mi (9,076.16 km) |
| Bucharest to Ormond Beach (Florida) | 5,588.75 mi (8,994.22 km) |
| Bucharest to Oro Valley (Arizona) | 6,480.22 mi (10,428.91 km) |
| Bucharest to Oroville (California) | 6,298.66 mi (10,136.71 km) |
| Bucharest to Oshkosh (Wisconsin) | 5,126.95 mi (8,251.02 km) |
| Bucharest to Oskaloosa (Iowa) | 5,405.27 mi (8,698.93 km) |
