| Otwock to Oberkirch | 630.88 mi (1,015.31 km) |
| Otwock to Obernburg am Main | 549.68 mi (884.62 km) |
| Otwock to Obernkirchen | 514.08 mi (827.33 km) |
| Otwock to Oberschleissheim | 504.89 mi (812.55 km) |
| Otwock to Oberstdorf | 587.46 mi (945.43 km) |
| Otwock to Obertraubling | 454.57 mi (731.57 km) |
| Otwock to Obertshausen | 557.06 mi (896.51 km) |
| Otwock to Oberursel | 564.74 mi (908.86 km) |
| Otwock to Ochsenfurt | 516.47 mi (831.18 km) |
| Otwock to Ochsenhausen | 573.37 mi (922.75 km) |
| Otwock to Ochtrup | 595.72 mi (958.72 km) |
| Otwock to Odenthal | 611.21 mi (983.65 km) |
| Otwock to Oelde | 557.85 mi (897.78 km) |
| Otwock to Oelsnitz | 410.25 mi (660.23 km) |
| Otwock to Oer-Erkenschwick | 597.78 mi (962.03 km) |
