| Odorheiu Secuiesc to Nasaud | 79.23 mi (127.51 km) |
| Odorheiu Secuiesc to Navodari | 211.73 mi (340.75 km) |
| Odorheiu Secuiesc to Negresti-Oas | 139.10 mi (223.86 km) |
| Odorheiu Secuiesc to Nehoiu | 82.09 mi (132.12 km) |
| Odorheiu Secuiesc to Ocna Mures | 68.95 mi (110.97 km) |
| Odorheiu Secuiesc to Odobesti | 92.71 mi (149.20 km) |
| Odorheiu Secuiesc to Oltenita | 167.04 mi (268.83 km) |
| Odorheiu Secuiesc to Onesti | 70.17 mi (112.93 km) |
| Odorheiu Secuiesc to Oradea | 168.54 mi (271.25 km) |
| Odorheiu Secuiesc to Orastie | 105.70 mi (170.10 km) |
| Odorheiu Secuiesc to Oravita | 195.48 mi (314.60 km) |
| Odorheiu Secuiesc to Orsova | 178.40 mi (287.11 km) |
| Odorheiu Secuiesc to Otelu Rosu | 152.02 mi (244.65 km) |
| Odorheiu Secuiesc to Otopeni | 127.44 mi (205.09 km) |
| Odorheiu Secuiesc to Ovidiu | 212.16 mi (341.44 km) |
