| Boucau to Obernburg am Main | 665.40 mi (1,070.85 km) |
| Boucau to Obernkirchen | 776.96 mi (1,250.40 km) |
| Boucau to Oberschleissheim | 706.37 mi (1,136.79 km) |
| Boucau to Oberstdorf | 629.33 mi (1,012.81 km) |
| Boucau to Obertraubling | 751.41 mi (1,209.28 km) |
| Boucau to Obertshausen | 664.22 mi (1,068.96 km) |
| Boucau to Oberursel | 661.50 mi (1,064.59 km) |
| Boucau to Ochsenfurt | 691.64 mi (1,113.08 km) |
| Boucau to Ochsenhausen | 633.25 mi (1,019.11 km) |
| Boucau to Ochtrup | 721.11 mi (1,160.51 km) |
| Boucau to Odenthal | 656.24 mi (1,056.11 km) |
| Boucau to Oelde | 727.14 mi (1,170.21 km) |
| Boucau to Oelsnitz | 798.72 mi (1,285.41 km) |
| Boucau to Oer-Erkenschwick | 692.12 mi (1,113.85 km) |
| Boucau to Oerlinghausen | 748.77 mi (1,205.03 km) |
