| Targu Frumos to Oerlinghausen | 882.03 mi (1,419.49 km) |
| Targu Frumos to Oestrich-Winkel | 887.20 mi (1,427.81 km) |
| Targu Frumos to Offenburg | 886.79 mi (1,427.16 km) |
| Targu Frumos to Oftersheim | 857.99 mi (1,380.81 km) |
| Targu Frumos to Ohrdruf | 776.99 mi (1,250.44 km) |
| Targu Frumos to Ohringen | 816.18 mi (1,313.51 km) |
| Targu Frumos to Olbernhau | 664.01 mi (1,068.61 km) |
| Targu Frumos to Olching | 731.74 mi (1,177.62 km) |
| Targu Frumos to Oldenburg | 923.64 mi (1,486.46 km) |
| Targu Frumos to Oldenburg in Holstein | 855.36 mi (1,376.57 km) |
| Targu Frumos to Olfen | 931.44 mi (1,499.00 km) |
| Targu Frumos to Olpe | 903.45 mi (1,453.95 km) |
| Targu Frumos to Olsberg | 879.99 mi (1,416.21 km) |
| Targu Frumos to Oranienburg | 720.27 mi (1,159.16 km) |
| Targu Frumos to Ortenberg | 843.64 mi (1,357.71 km) |
