| Marsa to Oberkirch | 932.75 mi (1,501.11 km) |
| Marsa to Obernburg am Main | 1,001.04 mi (1,611.01 km) |
| Marsa to Obernkirchen | 1,162.19 mi (1,870.37 km) |
| Marsa to Oberschleissheim | 867.38 mi (1,395.91 km) |
| Marsa to Oberstdorf | 825.27 mi (1,328.14 km) |
| Marsa to Obertraubling | 911.56 mi (1,467.01 km) |
| Marsa to Obertshausen | 1,020.16 mi (1,641.78 km) |
| Marsa to Oberursel | 1,032.72 mi (1,662.01 km) |
| Marsa to Ochsenfurt | 976.89 mi (1,572.16 km) |
| Marsa to Ochsenhausen | 873.54 mi (1,405.82 km) |
| Marsa to Ochtrup | 1,183.20 mi (1,904.17 km) |
| Marsa to Odenthal | 1,108.87 mi (1,784.55 km) |
| Marsa to Oelde | 1,145.39 mi (1,843.32 km) |
| Marsa to Oelsnitz | 1,010.86 mi (1,626.82 km) |
| Marsa to Oer-Erkenschwick | 1,145.88 mi (1,844.11 km) |
