| Vitoria-Gasteiz to Olympia Heights (Florida) | 4,430.72 mi (7,130.56 km) |
| Vitoria-Gasteiz to Omaha (Nebraska) | 4,519.36 mi (7,273.20 km) |
| Vitoria-Gasteiz to On Top of the World Designated Place (Florida) | 4,386.51 mi (7,059.41 km) |
| Vitoria-Gasteiz to Onalaska (Wisconsin) | 4,213.48 mi (6,780.94 km) |
| Vitoria-Gasteiz to Oneida (New York) | 3,564.76 mi (5,736.92 km) |
| Vitoria-Gasteiz to Oneonta (New York) | 3,557.02 mi (5,724.47 km) |
| Vitoria-Gasteiz to Ontario (California) | 5,723.55 mi (9,211.17 km) |
| Vitoria-Gasteiz to Ontario (Oregon) | 5,194.45 mi (8,359.66 km) |
| Vitoria-Gasteiz to Opa-locka (Florida) | 4,419.23 mi (7,112.07 km) |
| Vitoria-Gasteiz to Opelika (Alabama) | 4,390.45 mi (7,065.75 km) |
| Vitoria-Gasteiz to Opelousas (Louisiana) | 4,794.16 mi (7,715.46 km) |
| Vitoria-Gasteiz to Orange (California) | 5,743.91 mi (9,243.93 km) |
| Vitoria-Gasteiz to Orange (Texas) | 4,889.67 mi (7,869.16 km) |
| Vitoria-Gasteiz to Orange City (Florida) | 4,344.83 mi (6,992.33 km) |
| Vitoria-Gasteiz to Orangeburg (South Carolina) | 4,143.36 mi (6,668.09 km) |
