| Seinajoki to Obernburg am Main | 1,032.67 mi (1,661.92 km) |
| Seinajoki to Obernkirchen | 883.75 mi (1,422.25 km) |
| Seinajoki to Oberschleissheim | 1,093.55 mi (1,759.89 km) |
| Seinajoki to Oberstdorf | 1,168.26 mi (1,880.13 km) |
| Seinajoki to Obertraubling | 1,037.84 mi (1,670.24 km) |
| Seinajoki to Obertshausen | 1,024.33 mi (1,648.51 km) |
| Seinajoki to Oberursel | 1,020.81 mi (1,642.83 km) |
| Seinajoki to Ochsenfurt | 1,027.85 mi (1,654.16 km) |
| Seinajoki to Ochsenhausen | 1,130.83 mi (1,819.89 km) |
| Seinajoki to Ochtrup | 929.01 mi (1,495.10 km) |
| Seinajoki to Odenthal | 1,000.17 mi (1,609.61 km) |
| Seinajoki to Oelde | 930.08 mi (1,496.82 km) |
| Seinajoki to Oelsnitz | 943.65 mi (1,518.66 km) |
| Seinajoki to Oer-Erkenschwick | 960.90 mi (1,546.42 km) |
| Seinajoki to Oerlinghausen | 911.18 mi (1,466.40 km) |
