| Porto de Mos to Oberkirch | 1,037.74 mi (1,670.08 km) |
| Porto de Mos to Obernburg am Main | 1,125.36 mi (1,811.09 km) |
| Porto de Mos to Obernkirchen | 1,221.73 mi (1,966.18 km) |
| Porto de Mos to Oberschleissheim | 1,171.92 mi (1,886.03 km) |
| Porto de Mos to Oberstdorf | 1,094.36 mi (1,761.20 km) |
| Porto de Mos to Obertraubling | 1,216.89 mi (1,958.39 km) |
| Porto de Mos to Obertshausen | 1,122.30 mi (1,806.18 km) |
| Porto de Mos to Oberursel | 1,118.12 mi (1,799.44 km) |
| Porto de Mos to Ochsenfurt | 1,154.03 mi (1,857.24 km) |
| Porto de Mos to Ochsenhausen | 1,098.83 mi (1,768.39 km) |
| Porto de Mos to Ochtrup | 1,157.02 mi (1,862.04 km) |
| Porto de Mos to Odenthal | 1,101.42 mi (1,772.56 km) |
| Porto de Mos to Oelde | 1,170.94 mi (1,884.45 km) |
| Porto de Mos to Oelsnitz | 1,261.23 mi (2,029.75 km) |
| Porto de Mos to Oer-Erkenschwick | 1,133.04 mi (1,823.45 km) |
