| Biga to Oberkirch | 1,101.91 mi (1,773.36 km) |
| Biga to Obernburg am Main | 1,100.71 mi (1,771.43 km) |
| Biga to Obernkirchen | 1,194.45 mi (1,922.29 km) |
| Biga to Oberschleissheim | 950.62 mi (1,529.88 km) |
| Biga to Oberstdorf | 977.40 mi (1,572.98 km) |
| Biga to Obertraubling | 953.32 mi (1,534.23 km) |
| Biga to Obertshausen | 1,120.44 mi (1,803.17 km) |
| Biga to Oberursel | 1,135.00 mi (1,826.61 km) |
| Biga to Ochsenfurt | 1,058.51 mi (1,703.50 km) |
| Biga to Ochsenhausen | 1,010.79 mi (1,626.71 km) |
| Biga to Ochtrup | 1,258.83 mi (2,025.88 km) |
| Biga to Odenthal | 1,219.13 mi (1,962.01 km) |
| Biga to Oelde | 1,210.60 mi (1,948.28 km) |
| Biga to Oelsnitz | 1,012.23 mi (1,629.03 km) |
| Biga to Oer-Erkenschwick | 1,235.75 mi (1,988.75 km) |
