| Olhao to Oberkirch | 1,128.95 mi (1,816.86 km) |
| Olhao to Obernburg am Main | 1,223.19 mi (1,968.53 km) |
| Olhao to Obernkirchen | 1,336.09 mi (2,150.22 km) |
| Olhao to Oberschleissheim | 1,248.67 mi (2,009.54 km) |
| Olhao to Oberstdorf | 1,167.49 mi (1,878.89 km) |
| Olhao to Obertraubling | 1,297.94 mi (2,088.83 km) |
| Olhao to Obertshausen | 1,222.95 mi (1,968.15 km) |
| Olhao to Oberursel | 1,220.71 mi (1,964.54 km) |
| Olhao to Ochsenfurt | 1,247.18 mi (2,007.14 km) |
| Olhao to Ochsenhausen | 1,179.15 mi (1,897.66 km) |
| Olhao to Ochtrup | 1,277.66 mi (2,056.19 km) |
| Olhao to Odenthal | 1,215.22 mi (1,955.71 km) |
| Olhao to Oelde | 1,285.98 mi (2,069.58 km) |
| Olhao to Oelsnitz | 1,353.60 mi (2,178.41 km) |
| Olhao to Oer-Erkenschwick | 1,250.15 mi (2,011.92 km) |
