| Lousada to Olympia Heights (Florida) | 4,170.69 mi (6,712.08 km) |
| Lousada to Omaha (Nebraska) | 4,340.25 mi (6,984.96 km) |
| Lousada to On Top of the World Designated Place (Florida) | 4,138.94 mi (6,660.99 km) |
| Lousada to Onalaska (Wisconsin) | 4,035.74 mi (6,494.89 km) |
| Lousada to Oneida (New York) | 3,357.18 mi (5,402.87 km) |
| Lousada to Oneonta (New York) | 3,345.68 mi (5,384.36 km) |
| Lousada to Ontario (California) | 5,570.21 mi (8,964.38 km) |
| Lousada to Ontario (Oregon) | 5,073.55 mi (8,165.08 km) |
| Lousada to Opa-locka (Florida) | 4,159.51 mi (6,694.09 km) |
| Lousada to Opelika (Alabama) | 4,159.36 mi (6,693.85 km) |
| Lousada to Opelousas (Louisiana) | 4,569.19 mi (7,353.41 km) |
| Lousada to Orange (California) | 5,590.40 mi (8,996.88 km) |
| Lousada to Orange (Texas) | 4,666.84 mi (7,510.56 km) |
| Lousada to Orange City (Florida) | 4,095.04 mi (6,590.32 km) |
| Lousada to Orangeburg (South Carolina) | 3,906.88 mi (6,287.51 km) |
