| Fot to Olympia Heights (Florida) | 5,339.98 mi (8,593.86 km) |
| Fot to Omaha (Nebraska) | 5,131.68 mi (8,258.64 km) |
| Fot to On Top of the World Designated Place (Florida) | 5,250.28 mi (8,449.51 km) |
| Fot to Onalaska (Wisconsin) | 4,833.38 mi (7,778.58 km) |
| Fot to Oneida (New York) | 4,313.43 mi (6,941.80 km) |
| Fot to Oneonta (New York) | 4,318.58 mi (6,950.08 km) |
| Fot to Ontario (California) | 6,193.38 mi (9,967.28 km) |
| Fot to Ontario (Oregon) | 5,567.25 mi (8,959.62 km) |
| Fot to Opa-locka (Florida) | 5,327.55 mi (8,573.86 km) |
| Fot to Opelika (Alabama) | 5,193.93 mi (8,358.82 km) |
| Fot to Opelousas (Louisiana) | 5,564.10 mi (8,954.55 km) |
| Fot to Orange (California) | 6,213.51 mi (9,999.67 km) |
| Fot to Orange (Texas) | 5,648.95 mi (9,091.10 km) |
| Fot to Orange City (Florida) | 5,217.72 mi (8,397.12 km) |
| Fot to Orangeburg (South Carolina) | 4,972.91 mi (8,003.13 km) |
