| Vianden to Olympia Heights (Florida) | 4,730.34 mi (7,612.74 km) |
| Vianden to Omaha (Nebraska) | 4,580.76 mi (7,372.02 km) |
| Vianden to On Top of the World Designated Place (Florida) | 4,645.11 mi (7,475.59 km) |
| Vianden to Onalaska (Wisconsin) | 4,278.37 mi (6,885.37 km) |
| Vianden to Oneida (New York) | 3,724.23 mi (5,993.56 km) |
| Vianden to Oneonta (New York) | 3,726.89 mi (5,997.85 km) |
| Vianden to Ontario (California) | 5,696.08 mi (9,166.95 km) |
| Vianden to Ontario (Oregon) | 5,100.87 mi (8,209.05 km) |
| Vianden to Opa-locka (Florida) | 4,717.97 mi (7,592.83 km) |
| Vianden to Opelika (Alabama) | 4,597.83 mi (7,399.48 km) |
| Vianden to Opelousas (Louisiana) | 4,975.74 mi (8,007.67 km) |
| Vianden to Orange (California) | 5,716.44 mi (9,199.72 km) |
| Vianden to Orange (Texas) | 5,063.17 mi (8,148.38 km) |
| Vianden to Orange City (Florida) | 4,611.40 mi (7,421.33 km) |
| Vianden to Orangeburg (South Carolina) | 4,371.86 mi (7,035.83 km) |
