| Alcora to Oberkirch | 713.21 mi (1,147.79 km) |
| Alcora to Obernburg am Main | 813.86 mi (1,309.78 km) |
| Alcora to Obernkirchen | 951.78 mi (1,531.74 km) |
| Alcora to Oberschleissheim | 810.61 mi (1,304.55 km) |
| Alcora to Oberstdorf | 727.53 mi (1,170.84 km) |
| Alcora to Obertraubling | 863.52 mi (1,389.70 km) |
| Alcora to Obertshausen | 818.25 mi (1,316.84 km) |
| Alcora to Oberursel | 819.40 mi (1,318.70 km) |
| Alcora to Ochsenfurt | 829.81 mi (1,335.46 km) |
| Alcora to Ochsenhausen | 746.90 mi (1,202.01 km) |
| Alcora to Ochtrup | 909.15 mi (1,463.14 km) |
| Alcora to Odenthal | 835.35 mi (1,344.36 km) |
| Alcora to Oelde | 905.17 mi (1,456.73 km) |
| Alcora to Oelsnitz | 932.02 mi (1,499.94 km) |
| Alcora to Oer-Erkenschwick | 875.38 mi (1,408.79 km) |
