| Odorheiu Secuiesc to Odessa (Texas) | 6,124.64 mi (9,856.66 km) |
| Odorheiu Secuiesc to Ogden (Utah) | 5,841.75 mi (9,401.38 km) |
| Odorheiu Secuiesc to Oildale (California) | 6,369.00 mi (10,249.92 km) |
| Odorheiu Secuiesc to Ojus (Florida) | 5,618.59 mi (9,042.25 km) |
| Odorheiu Secuiesc to Okemos (Michigan) | 4,932.13 mi (7,937.50 km) |
| Odorheiu Secuiesc to Oklahoma City (Oklahoma) | 5,763.19 mi (9,274.96 km) |
| Odorheiu Secuiesc to Okmulgee (Oklahoma) | 5,705.10 mi (9,181.47 km) |
| Odorheiu Secuiesc to Olathe (Kansas) | 5,485.34 mi (8,827.80 km) |
| Odorheiu Secuiesc to Old Jamestown (Missouri) | 5,335.58 mi (8,586.78 km) |
| Odorheiu Secuiesc to Oldsmar (Florida) | 5,614.42 mi (9,035.54 km) |
| Odorheiu Secuiesc to Olean (New York) | 4,748.06 mi (7,641.26 km) |
| Odorheiu Secuiesc to Olive Branch (Mississippi) | 5,526.81 mi (8,894.54 km) |
| Odorheiu Secuiesc to Olivehurst (California) | 6,191.04 mi (9,963.51 km) |
| Odorheiu Secuiesc to Olney (Maryland) | 4,837.72 mi (7,785.56 km) |
| Odorheiu Secuiesc to Olympia (Washington) | 5,705.50 mi (9,182.12 km) |
