| Calella to Oberkirch | 545.81 mi (878.40 km) |
| Calella to Obernburg am Main | 647.81 mi (1,042.54 km) |
| Calella to Obernkirchen | 795.52 mi (1,280.27 km) |
| Calella to Oberschleissheim | 631.36 mi (1,016.08 km) |
| Calella to Oberstdorf | 548.08 mi (882.05 km) |
| Calella to Obertraubling | 685.37 mi (1,103.00 km) |
| Calella to Obertshausen | 654.45 mi (1,053.24 km) |
| Calella to Oberursel | 657.33 mi (1,057.87 km) |
| Calella to Ochsenfurt | 659.55 mi (1,061.45 km) |
| Calella to Ochsenhausen | 570.65 mi (918.37 km) |
| Calella to Ochtrup | 761.77 mi (1,225.96 km) |
| Calella to Odenthal | 684.09 mi (1,100.93 km) |
| Calella to Oelde | 751.64 mi (1,209.66 km) |
| Calella to Oelsnitz | 758.67 mi (1,220.97 km) |
| Calella to Oer-Erkenschwick | 725.69 mi (1,167.88 km) |
