| Leiria to Oberkirch | 1,030.21 mi (1,657.97 km) |
| Leiria to Obernburg am Main | 1,117.49 mi (1,798.43 km) |
| Leiria to Obernkirchen | 1,213.13 mi (1,952.34 km) |
| Leiria to Oberschleissheim | 1,164.99 mi (1,874.87 km) |
| Leiria to Oberstdorf | 1,087.64 mi (1,750.38 km) |
| Leiria to Obertraubling | 1,209.74 mi (1,946.88 km) |
| Leiria to Obertshausen | 1,114.32 mi (1,793.32 km) |
| Leiria to Oberursel | 1,110.05 mi (1,786.46 km) |
| Leiria to Ochsenfurt | 1,146.36 mi (1,844.89 km) |
| Leiria to Ochsenhausen | 1,091.77 mi (1,757.03 km) |
| Leiria to Ochtrup | 1,148.19 mi (1,847.83 km) |
| Leiria to Odenthal | 1,092.88 mi (1,758.82 km) |
| Leiria to Oelde | 1,162.33 mi (1,870.59 km) |
| Leiria to Oelsnitz | 1,253.55 mi (2,017.39 km) |
| Leiria to Oer-Erkenschwick | 1,124.36 mi (1,809.48 km) |
