| Alcaniz to Oberkirch | 654.63 mi (1,053.52 km) |
| Alcaniz to Obernburg am Main | 754.36 mi (1,214.02 km) |
| Alcaniz to Obernkirchen | 888.84 mi (1,430.45 km) |
| Alcaniz to Oberschleissheim | 758.86 mi (1,221.27 km) |
| Alcaniz to Oberstdorf | 676.29 mi (1,088.39 km) |
| Alcaniz to Obertraubling | 810.62 mi (1,304.56 km) |
| Alcaniz to Obertshausen | 757.90 mi (1,219.72 km) |
| Alcaniz to Oberursel | 758.47 mi (1,220.64 km) |
| Alcaniz to Ochsenfurt | 772.07 mi (1,242.53 km) |
| Alcaniz to Ochsenhausen | 692.92 mi (1,115.14 km) |
| Alcaniz to Ochtrup | 844.39 mi (1,358.91 km) |
| Alcaniz to Odenthal | 771.51 mi (1,241.62 km) |
| Alcaniz to Oelde | 841.67 mi (1,354.54 km) |
| Alcaniz to Oelsnitz | 875.60 mi (1,409.14 km) |
| Alcaniz to Oer-Erkenschwick | 811.13 mi (1,305.38 km) |
