| Nea Smyrni to Orangevale (California) | 6,692.21 mi (10,770.08 km) |
| Nea Smyrni to Orchards (Washington) | 6,289.44 mi (10,121.87 km) |
| Nea Smyrni to Orcutt (California) | 6,905.72 mi (11,113.68 km) |
| Nea Smyrni to Oregon (Ohio) | 5,279.35 mi (8,496.28 km) |
| Nea Smyrni to Oregon (Wisconsin) | 5,452.64 mi (8,775.17 km) |
| Nea Smyrni to Oregon City (Oregon) | 6,312.32 mi (10,158.69 km) |
| Nea Smyrni to Orem (Utah) | 6,339.56 mi (10,202.53 km) |
| Nea Smyrni to Orinda (California) | 6,765.44 mi (10,887.92 km) |
| Nea Smyrni to Orland Park (Illinois) | 5,455.53 mi (8,779.83 km) |
| Nea Smyrni to Orlando (Florida) | 5,769.30 mi (9,284.79 km) |
| Nea Smyrni to Ormond Beach (Florida) | 5,721.98 mi (9,208.64 km) |
| Nea Smyrni to Oro Valley (Arizona) | 6,768.23 mi (10,892.42 km) |
| Nea Smyrni to Oroville (California) | 6,650.58 mi (10,703.07 km) |
| Nea Smyrni to Oshkosh (Wisconsin) | 5,371.06 mi (8,643.89 km) |
| Nea Smyrni to Oskaloosa (Iowa) | 5,651.22 mi (9,094.76 km) |
