| Alcamo to Oberkirch | 769.14 mi (1,237.81 km) |
| Alcamo to Obernburg am Main | 841.10 mi (1,353.62 km) |
| Alcamo to Obernkirchen | 1,004.53 mi (1,616.63 km) |
| Alcamo to Oberschleissheim | 713.20 mi (1,147.78 km) |
| Alcamo to Oberstdorf | 665.68 mi (1,071.30 km) |
| Alcamo to Obertraubling | 760.24 mi (1,223.48 km) |
| Alcamo to Obertshausen | 859.75 mi (1,383.64 km) |
| Alcamo to Oberursel | 871.90 mi (1,403.19 km) |
| Alcamo to Ochsenfurt | 819.14 mi (1,318.27 km) |
| Alcamo to Ochsenhausen | 713.74 mi (1,148.66 km) |
| Alcamo to Ochtrup | 1,021.77 mi (1,644.38 km) |
| Alcamo to Odenthal | 946.19 mi (1,522.74 km) |
| Alcamo to Oelde | 985.33 mi (1,585.73 km) |
| Alcamo to Oelsnitz | 860.34 mi (1,384.58 km) |
| Alcamo to Oer-Erkenschwick | 984.01 mi (1,583.61 km) |
