| Marion to Oberkirch | 4,505.73 mi (7,251.27 km) |
| Marion to Obernburg am Main | 4,490.76 mi (7,227.17 km) |
| Marion to Obernkirchen | 4,391.61 mi (7,067.61 km) |
| Marion to Oberschleissheim | 4,644.71 mi (7,474.94 km) |
| Marion to Oberstdorf | 4,633.56 mi (7,457.00 km) |
| Marion to Obertraubling | 4,635.48 mi (7,460.09 km) |
| Marion to Obertshausen | 4,470.45 mi (7,194.49 km) |
| Marion to Oberursel | 4,455.71 mi (7,170.78 km) |
| Marion to Ochsenfurt | 4,531.73 mi (7,293.11 km) |
| Marion to Ochsenhausen | 4,593.41 mi (7,392.37 km) |
| Marion to Ochtrup | 4,327.07 mi (6,963.75 km) |
| Marion to Odenthal | 4,370.33 mi (7,033.37 km) |
| Marion to Oelde | 4,375.26 mi (7,041.31 km) |
| Marion to Oelsnitz | 4,573.47 mi (7,360.28 km) |
| Marion to Oer-Erkenschwick | 4,351.19 mi (7,002.56 km) |
