| Orsova to Oswego (Illinois) | 5,094.40 mi (8,198.64 km) |
| Orsova to Oswego (New York) | 4,571.13 mi (7,356.53 km) |
| Orsova to Otsego (Minnesota) | 5,092.59 mi (8,195.74 km) |
| Orsova to Ottawa (Illinois) | 5,128.25 mi (8,253.12 km) |
| Orsova to Ottawa (Kansas) | 5,496.84 mi (8,846.31 km) |
| Orsova to Ottumwa (Iowa) | 5,271.64 mi (8,483.89 km) |
| Orsova to Overland (Missouri) | 5,318.42 mi (8,559.17 km) |
| Orsova to Overland Park (Kansas) | 5,461.67 mi (8,789.70 km) |
| Orsova to Overlea (Maryland) | 4,755.36 mi (7,653.02 km) |
| Orsova to Oviedo (Florida) | 5,457.35 mi (8,782.76 km) |
| Orsova to Owasso (Oklahoma) | 5,639.87 mi (9,076.50 km) |
| Orsova to Owatonna (Minnesota) | 5,140.50 mi (8,272.83 km) |
| Orsova to Owensboro (Kentucky) | 5,245.60 mi (8,441.98 km) |
| Orsova to Owings Mills (Maryland) | 4,764.20 mi (7,667.25 km) |
| Orsova to Owosso (Michigan) | 4,880.05 mi (7,853.68 km) |
