| Rovinari to Oerlinghausen | 821.60 mi (1,322.23 km) |
| Rovinari to Oestrich-Winkel | 788.81 mi (1,269.46 km) |
| Rovinari to Offenburg | 760.85 mi (1,224.47 km) |
| Rovinari to Oftersheim | 749.54 mi (1,206.26 km) |
| Rovinari to Ohrdruf | 704.87 mi (1,134.38 km) |
| Rovinari to Ohringen | 706.70 mi (1,137.33 km) |
| Rovinari to Olbernhau | 604.28 mi (972.49 km) |
| Rovinari to Olching | 606.10 mi (975.43 km) |
| Rovinari to Oldenburg | 881.28 mi (1,418.29 km) |
| Rovinari to Oldenburg in Holstein | 847.83 mi (1,364.45 km) |
| Rovinari to Olfen | 861.33 mi (1,386.17 km) |
| Rovinari to Olpe | 822.76 mi (1,324.10 km) |
| Rovinari to Olsberg | 807.70 mi (1,299.86 km) |
| Rovinari to Oranienburg | 703.91 mi (1,132.83 km) |
| Rovinari to Ortenberg | 755.09 mi (1,215.20 km) |
