| Torrelodones to Olympia Heights (Florida) | 4,401.07 mi (7,082.84 km) |
| Torrelodones to Omaha (Nebraska) | 4,555.45 mi (7,331.29 km) |
| Torrelodones to On Top of the World Designated Place (Florida) | 4,369.17 mi (7,031.50 km) |
| Torrelodones to Onalaska (Wisconsin) | 4,250.31 mi (6,840.21 km) |
| Torrelodones to Oneida (New York) | 3,580.36 mi (5,762.03 km) |
| Torrelodones to Oneonta (New York) | 3,569.80 mi (5,745.04 km) |
| Torrelodones to Ontario (California) | 5,776.72 mi (9,296.72 km) |
| Torrelodones to Ontario (Oregon) | 5,266.06 mi (8,474.91 km) |
| Torrelodones to Opa-locka (Florida) | 4,389.91 mi (7,064.87 km) |
| Torrelodones to Opelika (Alabama) | 4,387.76 mi (7,061.41 km) |
| Torrelodones to Opelousas (Louisiana) | 4,796.65 mi (7,719.46 km) |
| Torrelodones to Orange (California) | 5,796.98 mi (9,329.34 km) |
| Torrelodones to Orange (Texas) | 4,893.92 mi (7,876.00 km) |
| Torrelodones to Orange City (Florida) | 4,325.37 mi (6,961.02 km) |
| Torrelodones to Orangeburg (South Carolina) | 4,136.00 mi (6,656.24 km) |
