| Frankfort to Olympia Heights (Florida) | 901.06 mi (1,450.12 km) |
| Frankfort to Omaha (Nebraska) | 630.69 mi (1,015.00 km) |
| Frankfort to On Top of the World Designated Place (Florida) | 645.01 mi (1,038.04 km) |
| Frankfort to Onalaska (Wisconsin) | 513.63 mi (826.60 km) |
| Frankfort to Oneida (New York) | 588.25 mi (946.69 km) |
| Frankfort to Oneonta (New York) | 593.68 mi (955.43 km) |
| Frankfort to Ontario (California) | 1,840.16 mi (2,961.46 km) |
| Frankfort to Ontario (Oregon) | 1,707.94 mi (2,748.66 km) |
| Frankfort to Opa-locka (Florida) | 890.86 mi (1,433.70 km) |
| Frankfort to Opelika (Alabama) | 383.25 mi (616.79 km) |
| Frankfort to Opelousas (Louisiana) | 670.39 mi (1,078.89 km) |
| Frankfort to Orange (California) | 1,857.09 mi (2,988.69 km) |
| Frankfort to Orange (Texas) | 753.94 mi (1,213.35 km) |
| Frankfort to Orange City (Florida) | 671.80 mi (1,081.15 km) |
| Frankfort to Orangeburg (South Carolina) | 394.31 mi (634.58 km) |
