| Portlethen to Oswego (Illinois) | 3,744.77 mi (6,026.63 km) |
| Portlethen to Oswego (New York) | 3,239.06 mi (5,212.76 km) |
| Portlethen to Otsego (Minnesota) | 3,738.61 mi (6,016.72 km) |
| Portlethen to Ottawa (Illinois) | 3,778.52 mi (6,080.94 km) |
| Portlethen to Ottawa (Kansas) | 4,143.97 mi (6,669.07 km) |
| Portlethen to Ottumwa (Iowa) | 3,918.90 mi (6,306.86 km) |
| Portlethen to Overland (Missouri) | 3,970.81 mi (6,390.40 km) |
| Portlethen to Overland Park (Kansas) | 4,108.99 mi (6,612.78 km) |
| Portlethen to Overlea (Maryland) | 3,440.99 mi (5,537.73 km) |
| Portlethen to Oviedo (Florida) | 4,177.24 mi (6,722.62 km) |
| Portlethen to Owasso (Oklahoma) | 4,288.54 mi (6,901.74 km) |
| Portlethen to Owatonna (Minnesota) | 3,786.24 mi (6,093.37 km) |
| Portlethen to Owensboro (Kentucky) | 3,906.07 mi (6,286.21 km) |
| Portlethen to Owings Mills (Maryland) | 3,448.63 mi (5,550.03 km) |
| Portlethen to Owosso (Michigan) | 3,533.78 mi (5,687.06 km) |
