| Estremoz to Oberkirch | 1,026.13 mi (1,651.40 km) |
| Estremoz to Obernburg am Main | 1,117.60 mi (1,798.61 km) |
| Estremoz to Obernkirchen | 1,223.69 mi (1,969.34 km) |
| Estremoz to Oberschleissheim | 1,153.13 mi (1,855.78 km) |
| Estremoz to Oberstdorf | 1,073.54 mi (1,727.70 km) |
| Estremoz to Obertraubling | 1,200.39 mi (1,931.85 km) |
| Estremoz to Obertshausen | 1,116.12 mi (1,796.22 km) |
| Estremoz to Oberursel | 1,113.02 mi (1,791.24 km) |
| Estremoz to Ochsenfurt | 1,143.78 mi (1,840.73 km) |
| Estremoz to Ochsenhausen | 1,081.66 mi (1,740.77 km) |
| Estremoz to Ochtrup | 1,162.71 mi (1,871.21 km) |
| Estremoz to Odenthal | 1,102.83 mi (1,774.84 km) |
| Estremoz to Oelde | 1,173.23 mi (1,888.13 km) |
| Estremoz to Oelsnitz | 1,250.78 mi (2,012.93 km) |
| Estremoz to Oer-Erkenschwick | 1,136.52 mi (1,829.05 km) |
