| Mangalia to Oakley (California) | 6,486.39 mi (10,438.83 km) |
| Mangalia to Oakton (Virginia) | 5,091.00 mi (8,193.17 km) |
| Mangalia to Oakville (Missouri) | 5,592.75 mi (9,000.66 km) |
| Mangalia to Oatfield (Oregon) | 6,023.12 mi (9,693.27 km) |
| Mangalia to Ocala (Florida) | 5,764.10 mi (9,276.42 km) |
| Mangalia to Ocean Acres (New Jersey) | 4,932.50 mi (7,938.10 km) |
| Mangalia to Ocean City (New Jersey) | 4,967.24 mi (7,994.01 km) |
| Mangalia to Ocean Pines (Maryland) | 5,030.19 mi (8,095.31 km) |
| Mangalia to Ocean Pointe (Hawaii) | 7,917.15 mi (12,741.41 km) |
| Mangalia to Ocean Springs (Mississippi) | 5,963.43 mi (9,597.21 km) |
| Mangalia to Oceanside (California) | 6,696.20 mi (10,776.50 km) |
| Mangalia to Oceanside (New York) | 4,866.18 mi (7,831.36 km) |
| Mangalia to Ocoee (Florida) | 5,768.94 mi (9,284.22 km) |
| Mangalia to Oconomowoc (Wisconsin) | 5,286.45 mi (8,507.72 km) |
| Mangalia to Odenton (Maryland) | 5,058.88 mi (8,141.49 km) |
