| Imperial to Oswego (Illinois) | 1,608.88 mi (2,589.24 km) |
| Imperial to Oswego (New York) | 2,222.62 mi (3,576.97 km) |
| Imperial to Otsego (Minnesota) | 1,449.67 mi (2,333.01 km) |
| Imperial to Ottawa (Illinois) | 1,579.05 mi (2,541.24 km) |
| Imperial to Ottawa (Kansas) | 1,203.65 mi (1,937.09 km) |
| Imperial to Ottumwa (Iowa) | 1,392.55 mi (2,241.09 km) |
| Imperial to Overland (Missouri) | 1,464.45 mi (2,356.80 km) |
| Imperial to Overland Park (Kansas) | 1,238.44 mi (1,993.07 km) |
| Imperial to Overlea (Maryland) | 2,208.57 mi (3,554.35 km) |
| Imperial to Oviedo (Florida) | 2,053.04 mi (3,304.05 km) |
| Imperial to Owasso (Oklahoma) | 1,146.06 mi (1,844.40 km) |
| Imperial to Owatonna (Minnesota) | 1,429.81 mi (2,301.05 km) |
| Imperial to Owensboro (Kentucky) | 1,633.50 mi (2,628.86 km) |
| Imperial to Owings Mills (Maryland) | 2,193.93 mi (3,530.78 km) |
| Imperial to Owosso (Michigan) | 1,836.10 mi (2,954.92 km) |
