| Heilbad Heiligenstadt to Navodari | 981.71 mi (1,579.91 km) |
| Heilbad Heiligenstadt to Negresti-Oas | 641.02 mi (1,031.63 km) |
| Heilbad Heiligenstadt to Nehoiu | 848.27 mi (1,365.16 km) |
| Heilbad Heiligenstadt to Ocna Mures | 710.78 mi (1,143.89 km) |
| Heilbad Heiligenstadt to Odobesti | 862.85 mi (1,388.62 km) |
| Heilbad Heiligenstadt to Odorheiu Secuiesc | 771.18 mi (1,241.09 km) |
| Heilbad Heiligenstadt to Oltenita | 914.20 mi (1,471.27 km) |
| Heilbad Heiligenstadt to Onesti | 832.73 mi (1,340.15 km) |
| Heilbad Heiligenstadt to Oradea | 608.26 mi (978.89 km) |
| Heilbad Heiligenstadt to Orastie | 706.89 mi (1,137.63 km) |
| Heilbad Heiligenstadt to Oravita | 687.43 mi (1,106.32 km) |
| Heilbad Heiligenstadt to Orsova | 727.64 mi (1,171.02 km) |
| Heilbad Heiligenstadt to Otelu Rosu | 689.42 mi (1,109.52 km) |
| Heilbad Heiligenstadt to Otopeni | 872.31 mi (1,403.85 km) |
| Heilbad Heiligenstadt to Ovidiu | 981.68 mi (1,579.87 km) |
