| Baia Mare to Oerlinghausen | 726.61 mi (1,169.36 km) |
| Baia Mare to Oestrich-Winkel | 725.40 mi (1,167.42 km) |
| Baia Mare to Offenburg | 723.44 mi (1,164.27 km) |
| Baia Mare to Oftersheim | 695.24 mi (1,118.88 km) |
| Baia Mare to Ohrdruf | 618.40 mi (995.22 km) |
| Baia Mare to Ohringen | 653.26 mi (1,051.32 km) |
| Baia Mare to Olbernhau | 506.78 mi (815.58 km) |
| Baia Mare to Olching | 568.43 mi (914.81 km) |
| Baia Mare to Oldenburg | 773.17 mi (1,244.29 km) |
| Baia Mare to Oldenburg in Holstein | 715.94 mi (1,152.19 km) |
| Baia Mare to Olfen | 774.23 mi (1,246.01 km) |
| Baia Mare to Olpe | 744.14 mi (1,197.58 km) |
| Baia Mare to Olsberg | 722.06 mi (1,162.04 km) |
| Baia Mare to Oranienburg | 576.02 mi (927.02 km) |
| Baia Mare to Ortenberg | 682.85 mi (1,098.94 km) |
