| Elk City to Oswego (Illinois) | 739.77 mi (1,190.55 km) |
| Elk City to Oswego (New York) | 1,338.97 mi (2,154.87 km) |
| Elk City to Otsego (Minnesota) | 747.58 mi (1,203.11 km) |
| Elk City to Ottawa (Illinois) | 706.28 mi (1,136.65 km) |
| Elk City to Ottawa (Kansas) | 319.56 mi (514.28 km) |
| Elk City to Ottumwa (Iowa) | 544.08 mi (875.60 km) |
| Elk City to Overland (Missouri) | 549.24 mi (883.92 km) |
| Elk City to Overland Park (Kansas) | 355.93 mi (572.82 km) |
| Elk City to Overlea (Maryland) | 1,284.01 mi (2,066.41 km) |
| Elk City to Oviedo (Florida) | 1,163.01 mi (1,871.68 km) |
| Elk City to Owasso (Oklahoma) | 210.98 mi (339.54 km) |
| Elk City to Owatonna (Minnesota) | 685.23 mi (1,102.77 km) |
| Elk City to Owensboro (Kentucky) | 702.03 mi (1,129.80 km) |
| Elk City to Owings Mills (Maryland) | 1,269.75 mi (2,043.47 km) |
| Elk City to Owosso (Michigan) | 969.10 mi (1,559.62 km) |
