| Rio de Mouro to Oberkirch | 1,097.08 mi (1,765.59 km) |
| Rio de Mouro to Obernburg am Main | 1,185.74 mi (1,908.27 km) |
| Rio de Mouro to Obernkirchen | 1,284.08 mi (2,066.53 km) |
| Rio de Mouro to Oberschleissheim | 1,229.17 mi (1,978.16 km) |
| Rio de Mouro to Oberstdorf | 1,150.86 mi (1,852.14 km) |
| Rio de Mouro to Obertraubling | 1,274.90 mi (2,051.76 km) |
| Rio de Mouro to Obertshausen | 1,183.05 mi (1,903.94 km) |
| Rio de Mouro to Oberursel | 1,179.11 mi (1,897.59 km) |
| Rio de Mouro to Ochsenfurt | 1,213.81 mi (1,953.43 km) |
| Rio de Mouro to Ochsenhausen | 1,156.57 mi (1,861.31 km) |
| Rio de Mouro to Ochtrup | 1,219.89 mi (1,963.22 km) |
| Rio de Mouro to Odenthal | 1,163.64 mi (1,872.70 km) |
| Rio de Mouro to Oelde | 1,233.33 mi (1,984.86 km) |
| Rio de Mouro to Oelsnitz | 1,321.00 mi (2,125.95 km) |
| Rio de Mouro to Oer-Erkenschwick | 1,195.60 mi (1,924.13 km) |
