| Ferreira do Zezere to Oberkirch | 1,012.91 mi (1,630.13 km) |
| Ferreira do Zezere to Obernburg am Main | 1,101.29 mi (1,772.36 km) |
| Ferreira do Zezere to Obernkirchen | 1,199.76 mi (1,930.82 km) |
| Ferreira do Zezere to Oberschleissheim | 1,145.94 mi (1,844.21 km) |
| Ferreira do Zezere to Oberstdorf | 1,068.03 mi (1,718.83 km) |
| Ferreira do Zezere to Obertraubling | 1,191.29 mi (1,917.19 km) |
| Ferreira do Zezere to Obertshausen | 1,098.55 mi (1,767.94 km) |
| Ferreira do Zezere to Oberursel | 1,094.58 mi (1,761.56 km) |
| Ferreira do Zezere to Ochsenfurt | 1,129.51 mi (1,817.77 km) |
| Ferreira do Zezere to Ochsenhausen | 1,073.08 mi (1,726.95 km) |
| Ferreira do Zezere to Ochtrup | 1,135.89 mi (1,828.04 km) |
| Ferreira do Zezere to Odenthal | 1,079.27 mi (1,736.91 km) |
| Ferreira do Zezere to Oelde | 1,149.02 mi (1,849.17 km) |
| Ferreira do Zezere to Oelsnitz | 1,236.71 mi (1,990.29 km) |
| Ferreira do Zezere to Oer-Erkenschwick | 1,111.38 mi (1,788.59 km) |
