| Aiken to Oswego (Illinois) | 669.01 mi (1,076.67 km) |
| Aiken to Oswego (New York) | 741.08 mi (1,192.65 km) |
| Aiken to Otsego (Minnesota) | 1,027.54 mi (1,653.67 km) |
| Aiken to Ottawa (Illinois) | 665.78 mi (1,071.46 km) |
| Aiken to Ottawa (Kansas) | 832.09 mi (1,339.12 km) |
| Aiken to Ottumwa (Iowa) | 782.03 mi (1,258.56 km) |
| Aiken to Overland (Missouri) | 599.61 mi (964.97 km) |
| Aiken to Overland Park (Kansas) | 810.70 mi (1,304.69 km) |
| Aiken to Overlea (Maryland) | 496.09 mi (798.37 km) |
| Aiken to Oviedo (Florida) | 338.15 mi (544.21 km) |
| Aiken to Owasso (Oklahoma) | 820.71 mi (1,320.81 km) |
| Aiken to Owatonna (Minnesota) | 955.17 mi (1,537.20 km) |
| Aiken to Owensboro (Kentucky) | 420.44 mi (676.64 km) |
| Aiken to Owings Mills (Maryland) | 490.04 mi (788.64 km) |
| Aiken to Owosso (Michigan) | 667.25 mi (1,073.84 km) |
