| Unterwellenborn to Navodari | 910.41 mi (1,465.16 km) |
| Unterwellenborn to Negresti-Oas | 572.82 mi (921.86 km) |
| Unterwellenborn to Nehoiu | 776.79 mi (1,250.12 km) |
| Unterwellenborn to Ocna Mures | 639.12 mi (1,028.56 km) |
| Unterwellenborn to Odobesti | 792.77 mi (1,275.84 km) |
| Unterwellenborn to Odorheiu Secuiesc | 700.67 mi (1,127.62 km) |
| Unterwellenborn to Oltenita | 841.17 mi (1,353.74 km) |
| Unterwellenborn to Onesti | 763.43 mi (1,228.62 km) |
| Unterwellenborn to Oradea | 536.23 mi (862.97 km) |
| Unterwellenborn to Orastie | 633.71 mi (1,019.86 km) |
| Unterwellenborn to Oravita | 612.45 mi (985.65 km) |
| Unterwellenborn to Orsova | 652.76 mi (1,050.52 km) |
| Unterwellenborn to Otelu Rosu | 615.21 mi (990.08 km) |
| Unterwellenborn to Otopeni | 799.46 mi (1,286.60 km) |
| Unterwellenborn to Ovidiu | 910.27 mi (1,464.93 km) |
