| Marousi to Oberkirch | 1,068.25 mi (1,719.18 km) |
| Marousi to Obernburg am Main | 1,089.42 mi (1,753.26 km) |
| Marousi to Obernkirchen | 1,210.16 mi (1,947.57 km) |
| Marousi to Oberschleissheim | 934.13 mi (1,503.34 km) |
| Marousi to Oberstdorf | 940.41 mi (1,513.45 km) |
| Marousi to Obertraubling | 950.95 mi (1,530.40 km) |
| Marousi to Obertshausen | 1,110.11 mi (1,786.56 km) |
| Marousi to Oberursel | 1,124.86 mi (1,810.29 km) |
| Marousi to Ochsenfurt | 1,050.48 mi (1,690.58 km) |
| Marousi to Ochsenhausen | 981.25 mi (1,579.16 km) |
| Marousi to Ochtrup | 1,263.48 mi (2,033.38 km) |
| Marousi to Odenthal | 1,210.80 mi (1,948.60 km) |
| Marousi to Oelde | 1,216.40 mi (1,957.60 km) |
| Marousi to Oelsnitz | 1,027.74 mi (1,653.99 km) |
| Marousi to Oer-Erkenschwick | 1,234.77 mi (1,987.17 km) |
