| Orsova to Odessa (Texas) | 6,108.13 mi (9,830.09 km) |
| Orsova to Ogden (Utah) | 5,861.02 mi (9,432.40 km) |
| Orsova to Oildale (California) | 6,395.31 mi (10,292.26 km) |
| Orsova to Ojus (Florida) | 5,545.66 mi (8,924.88 km) |
| Orsova to Okemos (Michigan) | 4,902.60 mi (7,889.97 km) |
| Orsova to Oklahoma City (Oklahoma) | 5,743.06 mi (9,242.56 km) |
| Orsova to Okmulgee (Oklahoma) | 5,682.20 mi (9,144.62 km) |
| Orsova to Olathe (Kansas) | 5,466.47 mi (8,797.43 km) |
| Orsova to Old Jamestown (Missouri) | 5,308.07 mi (8,542.51 km) |
| Orsova to Oldsmar (Florida) | 5,550.41 mi (8,932.53 km) |
| Orsova to Olean (New York) | 4,707.10 mi (7,575.34 km) |
| Orsova to Olive Branch (Mississippi) | 5,490.54 mi (8,836.17 km) |
| Orsova to Olivehurst (California) | 6,227.56 mi (10,022.29 km) |
| Orsova to Olney (Maryland) | 4,787.55 mi (7,704.82 km) |
| Orsova to Olympia (Washington) | 5,754.21 mi (9,260.51 km) |
