| Boston to Oswego (Illinois) | 3,940.67 mi (6,341.90 km) |
| Boston to Oswego (New York) | 3,410.60 mi (5,488.84 km) |
| Boston to Otsego (Minnesota) | 3,957.64 mi (6,369.20 km) |
| Boston to Ottawa (Illinois) | 3,974.60 mi (6,396.50 km) |
| Boston to Ottawa (Kansas) | 4,348.04 mi (6,997.49 km) |
| Boston to Ottumwa (Iowa) | 4,122.82 mi (6,635.04 km) |
| Boston to Overland (Missouri) | 4,162.57 mi (6,699.01 km) |
| Boston to Overland Park (Kansas) | 4,312.41 mi (6,940.15 km) |
| Boston to Overlea (Maryland) | 3,595.81 mi (5,786.89 km) |
| Boston to Oviedo (Florida) | 4,308.14 mi (6,933.29 km) |
| Boston to Owasso (Oklahoma) | 4,487.78 mi (7,222.38 km) |
| Boston to Owatonna (Minnesota) | 4,001.03 mi (6,439.04 km) |
| Boston to Owensboro (Kentucky) | 4,086.02 mi (6,575.82 km) |
| Boston to Owings Mills (Maryland) | 3,604.47 mi (5,800.84 km) |
| Boston to Owosso (Michigan) | 3,723.66 mi (5,992.65 km) |
