| Pioltello to Oberkirch | 217.69 mi (350.33 km) |
| Pioltello to Obernburg am Main | 300.00 mi (482.80 km) |
| Pioltello to Obernkirchen | 467.61 mi (752.55 km) |
| Pioltello to Oberschleissheim | 217.30 mi (349.71 km) |
| Pioltello to Oberstdorf | 139.42 mi (224.37 km) |
| Pioltello to Obertraubling | 273.84 mi (440.71 km) |
| Pioltello to Obertshausen | 316.38 mi (509.16 km) |
| Pioltello to Oberursel | 326.85 mi (526.01 km) |
| Pioltello to Ochsenfurt | 288.76 mi (464.72 km) |
| Pioltello to Ochsenhausen | 180.08 mi (289.82 km) |
| Pioltello to Ochtrup | 473.39 mi (761.84 km) |
| Pioltello to Odenthal | 395.62 mi (636.69 km) |
| Pioltello to Oelde | 440.89 mi (709.55 km) |
| Pioltello to Oelsnitz | 364.06 mi (585.90 km) |
| Pioltello to Oer-Erkenschwick | 434.88 mi (699.88 km) |
