| Altenbeken to Navodari | 1,039.76 mi (1,673.33 km) |
| Altenbeken to Negresti-Oas | 698.35 mi (1,123.89 km) |
| Altenbeken to Nehoiu | 906.36 mi (1,458.65 km) |
| Altenbeken to Ocna Mures | 768.92 mi (1,237.45 km) |
| Altenbeken to Odobesti | 920.63 mi (1,481.60 km) |
| Altenbeken to Odorheiu Secuiesc | 829.08 mi (1,334.27 km) |
| Altenbeken to Oltenita | 972.48 mi (1,565.05 km) |
| Altenbeken to Onesti | 890.31 mi (1,432.81 km) |
| Altenbeken to Oradea | 666.46 mi (1,072.56 km) |
| Altenbeken to Orastie | 765.17 mi (1,231.42 km) |
| Altenbeken to Oravita | 745.29 mi (1,199.43 km) |
| Altenbeken to Orsova | 785.57 mi (1,264.25 km) |
| Altenbeken to Otelu Rosu | 747.61 mi (1,203.17 km) |
| Altenbeken to Otopeni | 930.58 mi (1,497.62 km) |
| Altenbeken to Ovidiu | 1,039.75 mi (1,673.32 km) |
