| Alcobendas to Oberkirch | 797.41 mi (1,283.30 km) |
| Alcobendas to Obernburg am Main | 892.32 mi (1,436.05 km) |
| Alcobendas to Obernkirchen | 1,009.93 mi (1,625.33 km) |
| Alcobendas to Oberschleissheim | 917.90 mi (1,477.22 km) |
| Alcobendas to Oberstdorf | 837.26 mi (1,347.45 km) |
| Alcobendas to Obertraubling | 966.63 mi (1,555.64 km) |
| Alcobendas to Obertshausen | 892.63 mi (1,436.54 km) |
| Alcobendas to Oberursel | 890.85 mi (1,433.68 km) |
| Alcobendas to Ochsenfurt | 915.69 mi (1,473.66 km) |
| Alcobendas to Ochsenhausen | 847.81 mi (1,364.41 km) |
| Alcobendas to Ochtrup | 955.14 mi (1,537.15 km) |
| Alcobendas to Odenthal | 889.43 mi (1,431.39 km) |
| Alcobendas to Oelde | 960.38 mi (1,545.58 km) |
| Alcobendas to Oelsnitz | 1,021.99 mi (1,644.73 km) |
| Alcobendas to Oer-Erkenschwick | 925.81 mi (1,489.95 km) |
