| Birstonas to Navodari | 739.33 mi (1,189.83 km) |
| Birstonas to Negresti-Oas | 465.94 mi (749.86 km) |
| Birstonas to Nehoiu | 647.01 mi (1,041.26 km) |
| Birstonas to Ocna Mures | 567.49 mi (913.29 km) |
| Birstonas to Odobesti | 625.06 mi (1,005.93 km) |
| Birstonas to Odorheiu Secuiesc | 575.45 mi (926.09 km) |
| Birstonas to Oltenita | 735.94 mi (1,184.38 km) |
| Birstonas to Onesti | 588.96 mi (947.85 km) |
| Birstonas to Oradea | 528.25 mi (850.14 km) |
| Birstonas to Orastie | 605.84 mi (975.00 km) |
| Birstonas to Oravita | 668.76 mi (1,076.26 km) |
| Birstonas to Orsova | 686.28 mi (1,104.45 km) |
| Birstonas to Otelu Rosu | 631.95 mi (1,017.03 km) |
| Birstonas to Otopeni | 700.54 mi (1,127.42 km) |
| Birstonas to Ovidiu | 742.09 mi (1,194.28 km) |
