| Marcon to Oberkirch | 285.87 mi (460.06 km) |
| Marcon to Obernburg am Main | 330.46 mi (531.82 km) |
| Marcon to Obernkirchen | 485.62 mi (781.53 km) |
| Marcon to Oberschleissheim | 189.44 mi (304.87 km) |
| Marcon to Oberstdorf | 160.21 mi (257.84 km) |
| Marcon to Obertraubling | 235.79 mi (379.47 km) |
| Marcon to Obertshausen | 350.72 mi (564.43 km) |
| Marcon to Oberursel | 364.49 mi (586.59 km) |
| Marcon to Ochsenfurt | 301.46 mi (485.15 km) |
| Marcon to Ochsenhausen | 206.44 mi (332.23 km) |
| Marcon to Ochtrup | 514.56 mi (828.10 km) |
| Marcon to Odenthal | 447.03 mi (719.43 km) |
| Marcon to Oelde | 473.12 mi (761.41 km) |
| Marcon to Oelsnitz | 336.02 mi (540.76 km) |
| Marcon to Oer-Erkenschwick | 479.47 mi (771.63 km) |
