| Zollikon to Oberkirch | 85.43 mi (137.48 km) |
| Zollikon to Obernburg am Main | 174.49 mi (280.81 km) |
| Zollikon to Obernkirchen | 341.08 mi (548.91 km) |
| Zollikon to Oberschleissheim | 152.21 mi (244.97 km) |
| Zollikon to Oberstdorf | 79.72 mi (128.29 km) |
| Zollikon to Obertraubling | 199.83 mi (321.60 km) |
| Zollikon to Obertshausen | 188.60 mi (303.53 km) |
| Zollikon to Oberursel | 197.68 mi (318.14 km) |
| Zollikon to Ochsenfurt | 173.40 mi (279.05 km) |
| Zollikon to Ochsenhausen | 81.24 mi (130.74 km) |
| Zollikon to Ochtrup | 341.67 mi (549.87 km) |
| Zollikon to Odenthal | 263.42 mi (423.93 km) |
| Zollikon to Oelde | 310.90 mi (500.34 km) |
| Zollikon to Oelsnitz | 267.72 mi (430.86 km) |
| Zollikon to Oer-Erkenschwick | 303.00 mi (487.63 km) |
