| Nea Smyrni to Odessa (Texas) | 6,493.23 mi (10,449.84 km) |
| Nea Smyrni to Ogden (Utah) | 6,293.77 mi (10,128.85 km) |
| Nea Smyrni to Oildale (California) | 6,834.25 mi (10,998.66 km) |
| Nea Smyrni to Ojus (Florida) | 5,825.38 mi (9,375.05 km) |
| Nea Smyrni to Okemos (Michigan) | 5,272.06 mi (8,484.56 km) |
| Nea Smyrni to Oklahoma City (Oklahoma) | 6,123.96 mi (9,855.57 km) |
| Nea Smyrni to Okmulgee (Oklahoma) | 6,058.98 mi (9,750.98 km) |
| Nea Smyrni to Olathe (Kansas) | 5,850.48 mi (9,415.44 km) |
| Nea Smyrni to Old Jamestown (Missouri) | 5,678.97 mi (9,139.42 km) |
| Nea Smyrni to Oldsmar (Florida) | 5,850.25 mi (9,415.06 km) |
| Nea Smyrni to Olean (New York) | 5,057.83 mi (8,139.79 km) |
| Nea Smyrni to Olive Branch (Mississippi) | 5,845.55 mi (9,407.51 km) |
| Nea Smyrni to Olivehurst (California) | 6,676.32 mi (10,744.50 km) |
| Nea Smyrni to Olney (Maryland) | 5,120.60 mi (8,240.81 km) |
| Nea Smyrni to Olympia (Washington) | 6,212.92 mi (9,998.74 km) |
