| Vianden to Oakley (California) | 5,584.42 mi (8,987.26 km) |
| Vianden to Oakton (Virginia) | 3,973.80 mi (6,395.22 km) |
| Vianden to Oakville (Missouri) | 4,508.78 mi (7,256.18 km) |
| Vianden to Oatfield (Oregon) | 5,169.43 mi (8,319.39 km) |
| Vianden to Ocala (Florida) | 4,635.83 mi (7,460.65 km) |
| Vianden to Ocean Acres (New Jersey) | 3,812.18 mi (6,135.12 km) |
| Vianden to Ocean City (New Jersey) | 3,846.28 mi (6,190.00 km) |
| Vianden to Ocean Pines (Maryland) | 3,908.04 mi (6,289.39 km) |
| Vianden to Ocean Pointe (Hawaii) | 7,420.11 mi (11,941.52 km) |
| Vianden to Ocean Springs (Mississippi) | 4,849.08 mi (7,803.84 km) |
| Vianden to Oceanside (California) | 5,734.18 mi (9,228.28 km) |
| Vianden to Oceanside (New York) | 3,747.07 mi (6,030.33 km) |
| Vianden to Ocoee (Florida) | 4,639.33 mi (7,466.28 km) |
| Vianden to Oconomowoc (Wisconsin) | 4,216.66 mi (6,786.05 km) |
| Vianden to Odenton (Maryland) | 3,941.03 mi (6,342.48 km) |
