| Nea Smyrni to Oakley (California) | 6,746.68 mi (10,857.73 km) |
| Nea Smyrni to Oakton (Virginia) | 5,141.12 mi (8,273.83 km) |
| Nea Smyrni to Oakville (Missouri) | 5,698.93 mi (9,171.54 km) |
| Nea Smyrni to Oatfield (Oregon) | 6,307.96 mi (10,151.68 km) |
| Nea Smyrni to Ocala (Florida) | 5,775.80 mi (9,295.25 km) |
| Nea Smyrni to Ocean Acres (New Jersey) | 4,975.52 mi (8,007.32 km) |
| Nea Smyrni to Ocean City (New Jersey) | 5,008.36 mi (8,060.18 km) |
| Nea Smyrni to Ocean Pines (Maryland) | 5,067.66 mi (8,155.61 km) |
| Nea Smyrni to Ocean Pointe (Hawaii) | 8,340.44 mi (13,422.65 km) |
| Nea Smyrni to Ocean Springs (Mississippi) | 6,016.46 mi (9,682.55 km) |
| Nea Smyrni to Oceanside (California) | 6,918.23 mi (11,133.81 km) |
| Nea Smyrni to Oceanside (New York) | 4,912.66 mi (7,906.16 km) |
| Nea Smyrni to Ocoee (Florida) | 5,773.88 mi (9,292.16 km) |
| Nea Smyrni to Oconomowoc (Wisconsin) | 5,411.02 mi (8,708.20 km) |
| Nea Smyrni to Odenton (Maryland) | 5,107.56 mi (8,219.83 km) |
