| Altus to Oswego (Illinois) | 767.49 mi (1,235.16 km) |
| Altus to Oswego (New York) | 1,360.10 mi (2,188.87 km) |
| Altus to Otsego (Minnesota) | 791.96 mi (1,274.53 km) |
| Altus to Ottawa (Illinois) | 733.74 mi (1,180.83 km) |
| Altus to Ottawa (Kansas) | 352.72 mi (567.64 km) |
| Altus to Ottumwa (Iowa) | 577.98 mi (930.16 km) |
| Altus to Overland (Missouri) | 568.11 mi (914.28 km) |
| Altus to Overland Park (Kansas) | 388.20 mi (624.75 km) |
| Altus to Overlea (Maryland) | 1,294.84 mi (2,083.84 km) |
| Altus to Oviedo (Florida) | 1,141.26 mi (1,836.67 km) |
| Altus to Owasso (Oklahoma) | 225.67 mi (363.18 km) |
| Altus to Owatonna (Minnesota) | 727.64 mi (1,171.02 km) |
| Altus to Owensboro (Kentucky) | 711.88 mi (1,145.66 km) |
| Altus to Owings Mills (Maryland) | 1,280.78 mi (2,061.22 km) |
| Altus to Owosso (Michigan) | 995.12 mi (1,601.50 km) |
