| Massama to Oberkirch | 1,095.40 mi (1,762.88 km) |
| Massama to Obernburg am Main | 1,184.19 mi (1,905.76 km) |
| Massama to Obernkirchen | 1,282.85 mi (2,064.56 km) |
| Massama to Oberschleissheim | 1,227.27 mi (1,975.11 km) |
| Massama to Oberstdorf | 1,148.90 mi (1,848.98 km) |
| Massama to Obertraubling | 1,273.08 mi (2,048.82 km) |
| Massama to Obertshausen | 1,181.55 mi (1,901.52 km) |
| Massama to Oberursel | 1,177.64 mi (1,895.23 km) |
| Massama to Ochsenfurt | 1,212.17 mi (1,950.80 km) |
| Massama to Ochsenhausen | 1,154.72 mi (1,858.34 km) |
| Massama to Ochtrup | 1,218.78 mi (1,961.44 km) |
| Massama to Odenthal | 1,162.39 mi (1,870.68 km) |
| Massama to Oelde | 1,232.11 mi (1,982.89 km) |
| Massama to Oelsnitz | 1,319.37 mi (2,123.31 km) |
| Massama to Oer-Erkenschwick | 1,194.41 mi (1,922.22 km) |
