| Siano to Oberkirch | 624.63 mi (1,005.24 km) |
| Siano to Obernburg am Main | 679.74 mi (1,093.94 km) |
| Siano to Obernkirchen | 834.62 mi (1,343.20 km) |
| Siano to Oberschleissheim | 537.02 mi (864.25 km) |
| Siano to Oberstdorf | 506.13 mi (814.55 km) |
| Siano to Obertraubling | 577.35 mi (929.16 km) |
| Siano to Obertshausen | 699.80 mi (1,126.22 km) |
| Siano to Oberursel | 713.30 mi (1,147.95 km) |
| Siano to Ochsenfurt | 651.14 mi (1,047.91 km) |
| Siano to Ochsenhausen | 553.91 mi (891.44 km) |
| Siano to Ochtrup | 863.82 mi (1,390.19 km) |
| Siano to Odenthal | 794.21 mi (1,278.16 km) |
| Siano to Oelde | 822.84 mi (1,324.23 km) |
| Siano to Oelsnitz | 675.31 mi (1,086.81 km) |
| Siano to Oer-Erkenschwick | 828.15 mi (1,332.78 km) |
