| Delbruck to Navodari | 1,054.33 mi (1,696.78 km) |
| Delbruck to Negresti-Oas | 713.37 mi (1,148.06 km) |
| Delbruck to Nehoiu | 920.89 mi (1,482.03 km) |
| Delbruck to Ocna Mures | 783.38 mi (1,260.73 km) |
| Delbruck to Odobesti | 935.42 mi (1,505.41 km) |
| Delbruck to Odorheiu Secuiesc | 843.78 mi (1,357.94 km) |
| Delbruck to Oltenita | 986.60 mi (1,587.78 km) |
| Delbruck to Onesti | 905.22 mi (1,456.81 km) |
| Delbruck to Oradea | 680.82 mi (1,095.68 km) |
| Delbruck to Orastie | 779.23 mi (1,254.04 km) |
| Delbruck to Oravita | 758.42 mi (1,220.56 km) |
| Delbruck to Orsova | 798.79 mi (1,285.53 km) |
| Delbruck to Otelu Rosu | 761.25 mi (1,225.11 km) |
| Delbruck to Otopeni | 944.75 mi (1,520.43 km) |
| Delbruck to Ovidiu | 1,054.31 mi (1,696.74 km) |
