| Plougastel-Daoulas to Obernburg am Main | 618.65 mi (995.63 km) |
| Plougastel-Daoulas to Obernkirchen | 651.75 mi (1,048.90 km) |
| Plougastel-Daoulas to Oberschleissheim | 731.09 mi (1,176.58 km) |
| Plougastel-Daoulas to Oberstdorf | 680.92 mi (1,095.84 km) |
| Plougastel-Daoulas to Obertraubling | 754.22 mi (1,213.80 km) |
| Plougastel-Daoulas to Obertshausen | 606.42 mi (975.94 km) |
| Plougastel-Daoulas to Oberursel | 596.23 mi (959.55 km) |
| Plougastel-Daoulas to Ochsenfurt | 659.17 mi (1,060.82 km) |
| Plougastel-Daoulas to Ochsenhausen | 658.50 mi (1,059.75 km) |
| Plougastel-Daoulas to Ochtrup | 574.07 mi (923.88 km) |
| Plougastel-Daoulas to Odenthal | 544.56 mi (876.38 km) |
| Plougastel-Daoulas to Oelde | 603.20 mi (970.76 km) |
| Plougastel-Daoulas to Oelsnitz | 755.30 mi (1,215.53 km) |
| Plougastel-Daoulas to Oer-Erkenschwick | 562.52 mi (905.29 km) |
| Plougastel-Daoulas to Oerlinghausen | 627.01 mi (1,009.07 km) |
