| Ferentino to Oswego (Illinois) | 4,886.16 mi (7,863.52 km) |
| Ferentino to Oswego (New York) | 4,327.39 mi (6,964.26 km) |
| Ferentino to Otsego (Minnesota) | 4,929.45 mi (7,933.18 km) |
| Ferentino to Ottawa (Illinois) | 4,920.09 mi (7,918.11 km) |
| Ferentino to Ottawa (Kansas) | 5,301.48 mi (8,531.91 km) |
| Ferentino to Ottumwa (Iowa) | 5,077.27 mi (8,171.07 km) |
| Ferentino to Overland (Missouri) | 5,101.04 mi (8,209.33 km) |
| Ferentino to Overland Park (Kansas) | 5,265.23 mi (8,473.57 km) |
| Ferentino to Overlea (Maryland) | 4,484.48 mi (7,217.07 km) |
| Ferentino to Oviedo (Florida) | 5,143.40 mi (8,277.49 km) |
| Ferentino to Owasso (Oklahoma) | 5,434.24 mi (8,745.57 km) |
| Ferentino to Owatonna (Minnesota) | 4,968.37 mi (7,995.83 km) |
| Ferentino to Owensboro (Kentucky) | 5,008.27 mi (8,060.03 km) |
| Ferentino to Owings Mills (Maryland) | 4,494.68 mi (7,233.48 km) |
| Ferentino to Owosso (Michigan) | 4,662.87 mi (7,504.16 km) |
