| Sasso Marconi to Oberkirch | 322.84 mi (519.56 km) |
| Sasso Marconi to Obernburg am Main | 388.68 mi (625.52 km) |
| Sasso Marconi to Obernkirchen | 552.20 mi (888.69 km) |
| Sasso Marconi to Oberschleissheim | 266.44 mi (428.79 km) |
| Sasso Marconi to Oberstdorf | 213.12 mi (342.98 km) |
| Sasso Marconi to Obertraubling | 318.44 mi (512.48 km) |
| Sasso Marconi to Obertshausen | 407.56 mi (655.90 km) |
| Sasso Marconi to Oberursel | 420.00 mi (675.93 km) |
| Sasso Marconi to Ochsenfurt | 366.98 mi (590.60 km) |
| Sasso Marconi to Ochsenhausen | 261.23 mi (420.41 km) |
| Sasso Marconi to Ochtrup | 570.45 mi (918.04 km) |
| Sasso Marconi to Odenthal | 496.76 mi (799.46 km) |
| Sasso Marconi to Oelde | 533.00 mi (857.78 km) |
| Sasso Marconi to Oelsnitz | 417.91 mi (672.56 km) |
| Sasso Marconi to Oer-Erkenschwick | 533.22 mi (858.13 km) |
