| Piossasco to Oberkirch | 246.52 mi (396.74 km) |
| Piossasco to Obernburg am Main | 344.10 mi (553.77 km) |
| Piossasco to Obernkirchen | 508.32 mi (818.05 km) |
| Piossasco to Oberschleissheim | 297.62 mi (478.97 km) |
| Piossasco to Oberstdorf | 214.60 mi (345.36 km) |
| Piossasco to Obertraubling | 352.83 mi (567.83 km) |
| Piossasco to Obertshausen | 356.48 mi (573.70 km) |
| Piossasco to Oberursel | 363.87 mi (585.59 km) |
| Piossasco to Ochsenfurt | 344.19 mi (553.92 km) |
| Piossasco to Ochsenhausen | 243.44 mi (391.78 km) |
| Piossasco to Ochtrup | 498.66 mi (802.52 km) |
| Piossasco to Odenthal | 417.82 mi (672.41 km) |
| Piossasco to Oelde | 473.83 mi (762.55 km) |
| Piossasco to Oelsnitz | 433.81 mi (698.16 km) |
| Piossasco to Oer-Erkenschwick | 459.68 mi (739.79 km) |
