| Zierikzee to Oberkirch | 283.60 mi (456.41 km) |
| Zierikzee to Obernburg am Main | 260.33 mi (418.97 km) |
| Zierikzee to Obernkirchen | 225.47 mi (362.87 km) |
| Zierikzee to Oberschleissheim | 413.01 mi (664.68 km) |
| Zierikzee to Oberstdorf | 408.66 mi (657.68 km) |
| Zierikzee to Obertraubling | 408.25 mi (657.02 km) |
| Zierikzee to Obertshausen | 240.66 mi (387.31 km) |
| Zierikzee to Oberursel | 226.18 mi (364.00 km) |
| Zierikzee to Ochsenfurt | 302.66 mi (487.09 km) |
| Zierikzee to Ochsenhausen | 364.85 mi (587.16 km) |
| Zierikzee to Ochtrup | 144.67 mi (232.82 km) |
| Zierikzee to Odenthal | 144.53 mi (232.60 km) |
| Zierikzee to Oelde | 181.55 mi (292.17 km) |
| Zierikzee to Oelsnitz | 368.25 mi (592.63 km) |
| Zierikzee to Oer-Erkenschwick | 142.95 mi (230.05 km) |
