| Castrovillari to Oswego (Illinois) | 5,087.33 mi (8,187.26 km) |
| Castrovillari to Oswego (New York) | 4,528.14 mi (7,287.33 km) |
| Castrovillari to Otsego (Minnesota) | 5,129.60 mi (8,255.29 km) |
| Castrovillari to Ottawa (Illinois) | 5,121.25 mi (8,241.85 km) |
| Castrovillari to Ottawa (Kansas) | 5,502.57 mi (8,855.54 km) |
| Castrovillari to Ottumwa (Iowa) | 5,278.33 mi (8,494.65 km) |
| Castrovillari to Overland (Missouri) | 5,302.17 mi (8,533.01 km) |
| Castrovillari to Overland Park (Kansas) | 5,466.33 mi (8,797.21 km) |
| Castrovillari to Overlea (Maryland) | 4,683.95 mi (7,538.09 km) |
| Castrovillari to Oviedo (Florida) | 5,338.53 mi (8,591.54 km) |
| Castrovillari to Owasso (Oklahoma) | 5,635.40 mi (9,069.31 km) |
| Castrovillari to Owatonna (Minnesota) | 5,168.88 mi (8,318.51 km) |
| Castrovillari to Owensboro (Kentucky) | 5,209.06 mi (8,383.16 km) |
| Castrovillari to Owings Mills (Maryland) | 4,694.23 mi (7,554.63 km) |
| Castrovillari to Owosso (Michigan) | 4,864.02 mi (7,827.88 km) |
