| Fernan-Nunez to Olympia Heights (Florida) | 4,404.62 mi (7,088.55 km) |
| Fernan-Nunez to Omaha (Nebraska) | 4,636.13 mi (7,461.13 km) |
| Fernan-Nunez to On Top of the World Designated Place (Florida) | 4,387.82 mi (7,061.52 km) |
| Fernan-Nunez to Onalaska (Wisconsin) | 4,332.62 mi (6,972.68 km) |
| Fernan-Nunez to Oneida (New York) | 3,640.62 mi (5,859.00 km) |
| Fernan-Nunez to Oneonta (New York) | 3,626.84 mi (5,836.84 km) |
| Fernan-Nunez to Ontario (California) | 5,873.88 mi (9,453.10 km) |
| Fernan-Nunez to Ontario (Oregon) | 5,384.54 mi (8,665.58 km) |
| Fernan-Nunez to Opa-locka (Florida) | 4,393.88 mi (7,071.26 km) |
| Fernan-Nunez to Opelika (Alabama) | 4,423.93 mi (7,119.63 km) |
| Fernan-Nunez to Opelousas (Louisiana) | 4,837.79 mi (7,785.68 km) |
| Fernan-Nunez to Orange (California) | 5,894.01 mi (9,485.49 km) |
| Fernan-Nunez to Orange (Texas) | 4,936.90 mi (7,945.17 km) |
| Fernan-Nunez to Orange City (Florida) | 4,341.60 mi (6,987.13 km) |
| Fernan-Nunez to Orangeburg (South Carolina) | 4,167.38 mi (6,706.75 km) |
