| Serris to Obernburg am Main | 293.92 mi (473.03 km) |
| Serris to Obernkirchen | 364.11 mi (585.97 km) |
| Serris to Oberschleissheim | 403.53 mi (649.42 km) |
| Serris to Oberstdorf | 359.52 mi (578.60 km) |
| Serris to Obertraubling | 425.78 mi (685.23 km) |
| Serris to Obertshausen | 284.06 mi (457.14 km) |
| Serris to Oberursel | 275.77 mi (443.81 km) |
| Serris to Ochsenfurt | 332.75 mi (535.51 km) |
| Serris to Ochsenhausen | 332.44 mi (535.01 km) |
| Serris to Ochtrup | 301.49 mi (485.20 km) |
| Serris to Odenthal | 244.27 mi (393.11 km) |
| Serris to Oelde | 313.29 mi (504.19 km) |
| Serris to Oelsnitz | 433.05 mi (696.93 km) |
| Serris to Oer-Erkenschwick | 275.51 mi (443.39 km) |
| Serris to Oerlinghausen | 336.31 mi (541.23 km) |
