| Kars to Oberkirch | 1,790.32 mi (2,881.24 km) |
| Kars to Obernburg am Main | 1,752.91 mi (2,821.04 km) |
| Kars to Obernkirchen | 1,785.16 mi (2,872.94 km) |
| Kars to Oberschleissheim | 1,629.35 mi (2,622.18 km) |
| Kars to Oberstdorf | 1,683.15 mi (2,708.77 km) |
| Kars to Obertraubling | 1,609.26 mi (2,589.85 km) |
| Kars to Obertshausen | 1,768.74 mi (2,846.50 km) |
| Kars to Oberursel | 1,781.35 mi (2,866.81 km) |
| Kars to Ochsenfurt | 1,710.11 mi (2,752.16 km) |
| Kars to Ochsenhausen | 1,702.20 mi (2,739.42 km) |
| Kars to Ochtrup | 1,864.02 mi (2,999.85 km) |
| Kars to Odenthal | 1,853.22 mi (2,982.46 km) |
| Kars to Oelde | 1,818.99 mi (2,927.39 km) |
| Kars to Oelsnitz | 1,628.31 mi (2,620.52 km) |
| Kars to Oer-Erkenschwick | 1,854.36 mi (2,984.30 km) |
