| Billerbeck to Navodari | 1,110.27 mi (1,786.81 km) |
| Billerbeck to Negresti-Oas | 769.57 mi (1,238.50 km) |
| Billerbeck to Nehoiu | 976.79 mi (1,571.99 km) |
| Billerbeck to Ocna Mures | 839.23 mi (1,350.61 km) |
| Billerbeck to Odobesti | 991.53 mi (1,595.71 km) |
| Billerbeck to Odorheiu Secuiesc | 899.84 mi (1,448.15 km) |
| Billerbeck to Oltenita | 1,042.03 mi (1,676.98 km) |
| Billerbeck to Onesti | 961.38 mi (1,547.20 km) |
| Billerbeck to Oradea | 736.57 mi (1,185.40 km) |
| Billerbeck to Orastie | 834.59 mi (1,343.15 km) |
| Billerbeck to Oravita | 812.34 mi (1,307.33 km) |
| Billerbeck to Orsova | 852.84 mi (1,372.52 km) |
| Billerbeck to Otelu Rosu | 816.01 mi (1,313.24 km) |
| Billerbeck to Otopeni | 1,000.25 mi (1,609.75 km) |
| Billerbeck to Ovidiu | 1,110.22 mi (1,786.73 km) |
