| Colorno to Oberkirch | 271.51 mi (436.95 km) |
| Colorno to Obernburg am Main | 343.95 mi (553.53 km) |
| Colorno to Obernkirchen | 509.94 mi (820.66 km) |
| Colorno to Oberschleissheim | 235.94 mi (379.71 km) |
| Colorno to Oberstdorf | 171.18 mi (275.48 km) |
| Colorno to Obertraubling | 291.02 mi (468.35 km) |
| Colorno to Obertshausen | 361.97 mi (582.53 km) |
| Colorno to Oberursel | 373.70 mi (601.41 km) |
| Colorno to Ochsenfurt | 326.23 mi (525.01 km) |
| Colorno to Ochsenhausen | 217.86 mi (350.61 km) |
| Colorno to Ochtrup | 523.11 mi (841.86 km) |
| Colorno to Odenthal | 447.61 mi (720.36 km) |
| Colorno to Oelde | 487.57 mi (784.67 km) |
| Colorno to Oelsnitz | 387.81 mi (624.12 km) |
| Colorno to Oer-Erkenschwick | 485.28 mi (780.98 km) |
