| Orta Nova to Oswego (Illinois) | 4,999.54 mi (8,045.99 km) |
| Orta Nova to Oswego (New York) | 4,444.94 mi (7,153.44 km) |
| Orta Nova to Otsego (Minnesota) | 5,036.29 mi (8,105.12 km) |
| Orta Nova to Ottawa (Illinois) | 5,033.49 mi (8,100.61 km) |
| Orta Nova to Ottawa (Kansas) | 5,413.43 mi (8,712.08 km) |
| Orta Nova to Ottumwa (Iowa) | 5,188.88 mi (8,350.70 km) |
| Orta Nova to Overland (Missouri) | 5,215.83 mi (8,394.07 km) |
| Orta Nova to Overland Park (Kansas) | 5,377.30 mi (8,653.93 km) |
| Orta Nova to Overlea (Maryland) | 4,605.35 mi (7,411.59 km) |
| Orta Nova to Oviedo (Florida) | 5,268.83 mi (8,479.36 km) |
| Orta Nova to Owasso (Oklahoma) | 5,547.73 mi (8,928.21 km) |
| Orta Nova to Owatonna (Minnesota) | 5,076.63 mi (8,170.04 km) |
| Orta Nova to Owensboro (Kentucky) | 5,125.56 mi (8,248.79 km) |
| Orta Nova to Owings Mills (Maryland) | 4,615.40 mi (7,427.78 km) |
| Orta Nova to Owosso (Michigan) | 4,777.26 mi (7,688.26 km) |
