| Puerto Real to Oberkirch | 1,099.14 mi (1,768.89 km) |
| Puerto Real to Obernburg am Main | 1,196.28 mi (1,925.22 km) |
| Puerto Real to Obernkirchen | 1,318.28 mi (2,121.57 km) |
| Puerto Real to Oberschleissheim | 1,209.97 mi (1,947.27 km) |
| Puerto Real to Oberstdorf | 1,127.61 mi (1,814.71 km) |
| Puerto Real to Obertraubling | 1,261.14 mi (2,029.60 km) |
| Puerto Real to Obertshausen | 1,197.68 mi (1,927.48 km) |
| Puerto Real to Oberursel | 1,196.60 mi (1,925.75 km) |
| Puerto Real to Ochsenfurt | 1,217.40 mi (1,959.21 km) |
| Puerto Real to Ochsenhausen | 1,142.93 mi (1,839.37 km) |
| Puerto Real to Ochtrup | 1,264.32 mi (2,034.73 km) |
| Puerto Real to Odenthal | 1,198.00 mi (1,928.00 km) |
| Puerto Real to Oelde | 1,268.97 mi (2,042.20 km) |
| Puerto Real to Oelsnitz | 1,322.58 mi (2,128.49 km) |
| Puerto Real to Oer-Erkenschwick | 1,234.74 mi (1,987.13 km) |
