| Pianoro to Oberkirch | 325.73 mi (524.21 km) |
| Pianoro to Obernburg am Main | 390.81 mi (628.95 km) |
| Pianoro to Obernkirchen | 554.03 mi (891.62 km) |
| Pianoro to Oberschleissheim | 267.39 mi (430.33 km) |
| Pianoro to Oberstdorf | 215.15 mi (346.26 km) |
| Pianoro to Obertraubling | 319.07 mi (513.50 km) |
| Pianoro to Obertshausen | 409.77 mi (659.46 km) |
| Pianoro to Oberursel | 422.28 mi (679.60 km) |
| Pianoro to Ochsenfurt | 368.74 mi (593.43 km) |
| Pianoro to Ochsenhausen | 263.33 mi (423.78 km) |
| Pianoro to Ochtrup | 572.80 mi (921.83 km) |
| Pianoro to Odenthal | 499.34 mi (803.60 km) |
| Pianoro to Oelde | 535.15 mi (861.24 km) |
| Pianoro to Oelsnitz | 418.68 mi (673.80 km) |
| Pianoro to Oer-Erkenschwick | 535.65 mi (862.04 km) |
