| Memphis to Olympia Heights (Florida) | 864.76 mi (1,391.70 km) |
| Memphis to Omaha (Nebraska) | 538.26 mi (866.24 km) |
| Memphis to On Top of the World Designated Place (Florida) | 611.19 mi (983.61 km) |
| Memphis to Onalaska (Wisconsin) | 610.19 mi (982.00 km) |
| Memphis to Oneida (New York) | 942.04 mi (1,516.06 km) |
| Memphis to Oneonta (New York) | 947.44 mi (1,524.76 km) |
| Memphis to Ontario (California) | 1,569.17 mi (2,525.34 km) |
| Memphis to Ontario (Oregon) | 1,555.86 mi (2,503.92 km) |
| Memphis to Opa-locka (Florida) | 858.71 mi (1,381.96 km) |
| Memphis to Opelika (Alabama) | 312.82 mi (503.43 km) |
| Memphis to Opelousas (Louisiana) | 339.65 mi (546.61 km) |
| Memphis to Orange (California) | 1,584.37 mi (2,549.80 km) |
| Memphis to Orange (Texas) | 409.11 mi (658.41 km) |
| Memphis to Orange City (Florida) | 663.12 mi (1,067.19 km) |
| Memphis to Orangeburg (South Carolina) | 531.01 mi (854.58 km) |
