| Porto-Vecchio to Olympia Heights (Florida) | 5,042.86 mi (8,115.69 km) |
| Porto-Vecchio to Omaha (Nebraska) | 5,057.22 mi (8,138.80 km) |
| Porto-Vecchio to On Top of the World Designated Place (Florida) | 4,991.30 mi (8,032.73 km) |
| Porto-Vecchio to Onalaska (Wisconsin) | 4,751.69 mi (7,647.11 km) |
| Porto-Vecchio to Oneida (New York) | 4,138.60 mi (6,660.43 km) |
| Porto-Vecchio to Oneonta (New York) | 4,134.44 mi (6,653.74 km) |
| Porto-Vecchio to Ontario (California) | 6,220.06 mi (10,010.22 km) |
| Porto-Vecchio to Ontario (Oregon) | 5,649.12 mi (9,091.38 km) |
| Porto-Vecchio to Opa-locka (Florida) | 5,031.22 mi (8,096.97 km) |
| Porto-Vecchio to Opelika (Alabama) | 4,982.61 mi (8,018.74 km) |
| Porto-Vecchio to Opelousas (Louisiana) | 5,379.83 mi (8,658.01 km) |
| Porto-Vecchio to Orange (California) | 6,240.48 mi (10,043.09 km) |
| Porto-Vecchio to Orange (Texas) | 5,473.06 mi (8,808.03 km) |
| Porto-Vecchio to Orange City (Florida) | 4,951.15 mi (7,968.11 km) |
| Porto-Vecchio to Orangeburg (South Carolina) | 4,740.50 mi (7,629.10 km) |
