| Osimo to Oswego (Illinois) | 4,817.13 mi (7,752.41 km) |
| Osimo to Oswego (New York) | 4,266.09 mi (6,865.61 km) |
| Osimo to Otsego (Minnesota) | 4,850.69 mi (7,806.43 km) |
| Osimo to Ottawa (Illinois) | 4,851.08 mi (7,807.05 km) |
| Osimo to Ottawa (Kansas) | 5,230.07 mi (8,416.99 km) |
| Osimo to Ottumwa (Iowa) | 5,005.36 mi (8,055.35 km) |
| Osimo to Overland (Missouri) | 5,034.40 mi (8,102.08 km) |
| Osimo to Overland Park (Kansas) | 5,194.02 mi (8,358.96 km) |
| Osimo to Overlea (Maryland) | 4,430.45 mi (7,130.12 km) |
| Osimo to Oviedo (Florida) | 5,102.44 mi (8,211.58 km) |
| Osimo to Owasso (Oklahoma) | 5,365.31 mi (8,634.63 km) |
| Osimo to Owatonna (Minnesota) | 4,891.53 mi (7,872.16 km) |
| Osimo to Owensboro (Kentucky) | 4,946.30 mi (7,960.30 km) |
| Osimo to Owings Mills (Maryland) | 4,440.30 mi (7,145.97 km) |
| Osimo to Owosso (Michigan) | 4,595.60 mi (7,395.91 km) |
