| Oak Hills to Oswego (Illinois) | 1,732.86 mi (2,788.77 km) |
| Oak Hills to Oswego (New York) | 2,256.51 mi (3,631.50 km) |
| Oak Hills to Otsego (Minnesota) | 1,409.80 mi (2,268.86 km) |
| Oak Hills to Ottawa (Illinois) | 1,717.32 mi (2,763.76 km) |
| Oak Hills to Ottawa (Kansas) | 1,484.84 mi (2,389.61 km) |
| Oak Hills to Ottumwa (Iowa) | 1,552.02 mi (2,497.74 km) |
| Oak Hills to Overland (Missouri) | 1,717.01 mi (2,763.26 km) |
| Oak Hills to Overland Park (Kansas) | 1,503.32 mi (2,419.36 km) |
| Oak Hills to Overlea (Maryland) | 2,366.06 mi (3,807.81 km) |
| Oak Hills to Oviedo (Florida) | 2,537.47 mi (4,083.66 km) |
| Oak Hills to Owasso (Oklahoma) | 1,538.70 mi (2,476.29 km) |
| Oak Hills to Owatonna (Minnesota) | 1,446.48 mi (2,327.89 km) |
| Oak Hills to Owensboro (Kentucky) | 1,903.64 mi (3,063.61 km) |
| Oak Hills to Owings Mills (Maryland) | 2,351.47 mi (3,784.33 km) |
| Oak Hills to Owosso (Michigan) | 1,902.50 mi (3,061.79 km) |
