| Barbastro to Oberkirch | 591.92 mi (952.61 km) |
| Barbastro to Obernburg am Main | 690.62 mi (1,111.44 km) |
| Barbastro to Obernkirchen | 822.07 mi (1,322.99 km) |
| Barbastro to Oberschleissheim | 702.44 mi (1,130.47 km) |
| Barbastro to Oberstdorf | 620.67 mi (998.87 km) |
| Barbastro to Obertraubling | 752.93 mi (1,211.72 km) |
| Barbastro to Obertshausen | 693.40 mi (1,115.92 km) |
| Barbastro to Oberursel | 693.47 mi (1,116.02 km) |
| Barbastro to Ochsenfurt | 709.90 mi (1,142.47 km) |
| Barbastro to Ochsenhausen | 634.52 mi (1,021.17 km) |
| Barbastro to Ochtrup | 776.29 mi (1,249.32 km) |
| Barbastro to Odenthal | 704.11 mi (1,133.16 km) |
| Barbastro to Oelde | 774.50 mi (1,246.43 km) |
| Barbastro to Oelsnitz | 814.47 mi (1,310.76 km) |
| Barbastro to Oer-Erkenschwick | 743.40 mi (1,196.39 km) |
