| Zollikon to Oerlinghausen | 319.55 mi (514.26 km) |
| Zollikon to Oestrich-Winkel | 185.52 mi (298.57 km) |
| Zollikon to Offenburg | 83.24 mi (133.96 km) |
| Zollikon to Oftersheim | 140.15 mi (225.55 km) |
| Zollikon to Ohrdruf | 259.81 mi (418.12 km) |
| Zollikon to Ohringen | 135.18 mi (217.55 km) |
| Zollikon to Olbernhau | 314.85 mi (506.71 km) |
| Zollikon to Olching | 140.29 mi (225.77 km) |
| Zollikon to Oldenburg | 401.18 mi (645.64 km) |
| Zollikon to Oldenburg in Holstein | 491.08 mi (790.32 km) |
| Zollikon to Olfen | 306.95 mi (493.99 km) |
| Zollikon to Olpe | 256.10 mi (412.15 km) |
| Zollikon to Olsberg | 276.95 mi (445.70 km) |
| Zollikon to Oranienburg | 427.06 mi (687.28 km) |
| Zollikon to Ortenberg | 209.34 mi (336.91 km) |
