| Mairena del Aljarafe to Oberkirch | 1,050.77 mi (1,691.05 km) |
| Mairena del Aljarafe to Obernburg am Main | 1,147.09 mi (1,846.06 km) |
| Mairena del Aljarafe to Obernkirchen | 1,266.76 mi (2,038.65 km) |
| Mairena del Aljarafe to Oberschleissheim | 1,164.77 mi (1,874.52 km) |
| Mairena del Aljarafe to Oberstdorf | 1,082.81 mi (1,742.61 km) |
| Mairena del Aljarafe to Obertraubling | 1,215.26 mi (1,955.77 km) |
| Mairena del Aljarafe to Obertshausen | 1,148.02 mi (1,847.56 km) |
| Mairena del Aljarafe to Oberursel | 1,146.62 mi (1,845.30 km) |
| Mairena del Aljarafe to Ochsenfurt | 1,169.10 mi (1,881.48 km) |
| Mairena del Aljarafe to Ochsenhausen | 1,096.76 mi (1,765.07 km) |
| Mairena del Aljarafe to Ochtrup | 1,211.79 mi (1,950.18 km) |
| Mairena del Aljarafe to Odenthal | 1,146.28 mi (1,844.76 km) |
| Mairena del Aljarafe to Oelde | 1,217.23 mi (1,958.95 km) |
| Mairena del Aljarafe to Oelsnitz | 1,274.74 mi (2,051.50 km) |
| Mairena del Aljarafe to Oer-Erkenschwick | 1,182.63 mi (1,903.27 km) |
