| Zalec to Oberkirch | 366.62 mi (590.02 km) |
| Zalec to Obernburg am Main | 372.45 mi (599.41 km) |
| Zalec to Obernkirchen | 496.68 mi (799.33 km) |
| Zalec to Oberschleissheim | 217.99 mi (350.83 km) |
| Zalec to Oberstdorf | 244.34 mi (393.22 km) |
| Zalec to Obertraubling | 233.78 mi (376.24 km) |
| Zalec to Obertshausen | 392.99 mi (632.46 km) |
| Zalec to Oberursel | 407.76 mi (656.22 km) |
| Zalec to Ochsenfurt | 332.71 mi (535.45 km) |
| Zalec to Ochsenhausen | 275.37 mi (443.17 km) |
| Zalec to Ochtrup | 545.90 mi (878.53 km) |
| Zalec to Odenthal | 493.61 mi (794.38 km) |
| Zalec to Oelde | 499.21 mi (803.39 km) |
| Zalec to Oelsnitz | 318.99 mi (513.36 km) |
| Zalec to Oer-Erkenschwick | 516.82 mi (831.74 km) |
