| Norman to Olympia Heights (Florida) | 1,204.43 mi (1,938.34 km) |
| Norman to Omaha (Nebraska) | 422.44 mi (679.85 km) |
| Norman to On Top of the World Designated Place (Florida) | 975.81 mi (1,570.42 km) |
| Norman to Onalaska (Wisconsin) | 681.09 mi (1,096.11 km) |
| Norman to Oneida (New York) | 1,277.01 mi (2,055.14 km) |
| Norman to Oneonta (New York) | 1,293.74 mi (2,082.07 km) |
| Norman to Ontario (California) | 1,152.66 mi (1,855.02 km) |
| Norman to Ontario (Oregon) | 1,203.83 mi (1,937.37 km) |
| Norman to Opa-locka (Florida) | 1,201.32 mi (1,933.34 km) |
| Norman to Opelika (Alabama) | 708.23 mi (1,139.78 km) |
| Norman to Opelousas (Louisiana) | 446.14 mi (717.99 km) |
| Norman to Orange (California) | 1,167.71 mi (1,879.24 km) |
| Norman to Orange (Texas) | 410.04 mi (659.90 km) |
| Norman to Orange City (Florida) | 1,034.22 mi (1,664.41 km) |
| Norman to Orangeburg (South Carolina) | 946.48 mi (1,523.22 km) |
