| Ponca City to Olympia (Washington) | 1,497.92 mi (2,410.67 km) |
| Ponca City to Olympia Heights (Florida) | 1,243.53 mi (2,001.27 km) |
| Ponca City to Omaha (Nebraska) | 318.32 mi (512.29 km) |
| Ponca City to On Top of the World Designated Place (Florida) | 1,004.19 mi (1,616.09 km) |
| Ponca City to Onalaska (Wisconsin) | 583.08 mi (938.37 km) |
| Ponca City to Oneida (New York) | 1,212.34 mi (1,951.07 km) |
| Ponca City to Oneonta (New York) | 1,232.38 mi (1,983.32 km) |
| Ponca City to Ontario (California) | 1,169.44 mi (1,882.04 km) |
| Ponca City to Ontario (Oregon) | 1,159.01 mi (1,865.25 km) |
| Ponca City to Opa-locka (Florida) | 1,239.40 mi (1,994.63 km) |
| Ponca City to Opelika (Alabama) | 720.37 mi (1,159.32 km) |
| Ponca City to Opelousas (Louisiana) | 515.26 mi (829.24 km) |
| Ponca City to Orange (California) | 1,185.66 mi (1,908.14 km) |
| Ponca City to Orange (Texas) | 494.25 mi (795.41 km) |
| Ponca City to Orange City (Florida) | 1,060.39 mi (1,706.54 km) |
