| Bologna to Oswego (Illinois) | 4,690.31 mi (7,548.33 km) |
| Bologna to Oswego (New York) | 4,138.83 mi (6,660.80 km) |
| Bologna to Otsego (Minnesota) | 4,725.52 mi (7,604.99 km) |
| Bologna to Ottawa (Illinois) | 4,724.26 mi (7,602.96 km) |
| Bologna to Ottawa (Kansas) | 5,103.56 mi (8,213.38 km) |
| Bologna to Ottumwa (Iowa) | 4,878.90 mi (7,851.84 km) |
| Bologna to Overland (Missouri) | 4,907.38 mi (7,897.66 km) |
| Bologna to Overland Park (Kansas) | 5,067.47 mi (8,155.31 km) |
| Bologna to Overlea (Maryland) | 4,303.39 mi (6,925.64 km) |
| Bologna to Oviedo (Florida) | 4,976.97 mi (8,009.66 km) |
| Bologna to Owasso (Oklahoma) | 5,238.50 mi (8,430.55 km) |
| Bologna to Owatonna (Minnesota) | 4,765.93 mi (7,670.03 km) |
| Bologna to Owensboro (Kentucky) | 4,819.05 mi (7,755.52 km) |
| Bologna to Owings Mills (Maryland) | 4,313.22 mi (6,941.46 km) |
| Bologna to Owosso (Michigan) | 4,468.62 mi (7,191.54 km) |
