| Bilbao to Oberkirch | 641.70 mi (1,032.72 km) |
| Bilbao to Obernburg am Main | 730.31 mi (1,175.33 km) |
| Bilbao to Obernkirchen | 834.66 mi (1,343.26 km) |
| Bilbao to Oberschleissheim | 777.43 mi (1,251.15 km) |
| Bilbao to Oberstdorf | 701.36 mi (1,128.74 km) |
| Bilbao to Obertraubling | 821.38 mi (1,321.88 km) |
| Bilbao to Obertshausen | 728.02 mi (1,171.63 km) |
| Bilbao to Oberursel | 724.48 mi (1,165.94 km) |
| Bilbao to Ochsenfurt | 758.23 mi (1,220.25 km) |
| Bilbao to Ochsenhausen | 703.72 mi (1,132.52 km) |
| Bilbao to Ochtrup | 775.12 mi (1,247.44 km) |
| Bilbao to Odenthal | 713.77 mi (1,148.70 km) |
| Bilbao to Oelde | 784.30 mi (1,262.21 km) |
| Bilbao to Oelsnitz | 865.42 mi (1,392.76 km) |
| Bilbao to Oer-Erkenschwick | 747.99 mi (1,203.78 km) |
