| Drobeta-Turnu Severin to Oswego (Illinois) | 5,107.83 mi (8,220.25 km) |
| Drobeta-Turnu Severin to Oswego (New York) | 4,584.85 mi (7,378.61 km) |
| Drobeta-Turnu Severin to Otsego (Minnesota) | 5,105.59 mi (8,216.65 km) |
| Drobeta-Turnu Severin to Ottawa (Illinois) | 5,141.67 mi (8,274.73 km) |
| Drobeta-Turnu Severin to Ottawa (Kansas) | 5,510.13 mi (8,867.70 km) |
| Drobeta-Turnu Severin to Ottumwa (Iowa) | 5,284.94 mi (8,505.29 km) |
| Drobeta-Turnu Severin to Overland (Missouri) | 5,331.91 mi (8,580.88 km) |
| Drobeta-Turnu Severin to Overland Park (Kansas) | 5,474.97 mi (8,811.11 km) |
| Drobeta-Turnu Severin to Overlea (Maryland) | 4,769.22 mi (7,675.32 km) |
| Drobeta-Turnu Severin to Oviedo (Florida) | 5,471.34 mi (8,805.27 km) |
| Drobeta-Turnu Severin to Owasso (Oklahoma) | 5,653.25 mi (9,098.02 km) |
| Drobeta-Turnu Severin to Owatonna (Minnesota) | 5,153.58 mi (8,293.89 km) |
| Drobeta-Turnu Severin to Owensboro (Kentucky) | 5,259.25 mi (8,463.95 km) |
| Drobeta-Turnu Severin to Owings Mills (Maryland) | 4,778.06 mi (7,689.54 km) |
| Drobeta-Turnu Severin to Owosso (Michigan) | 4,893.57 mi (7,875.43 km) |
