| Diest to Obernburg am Main | 196.65 mi (316.48 km) |
| Diest to Obernkirchen | 195.57 mi (314.75 km) |
| Diest to Oberschleissheim | 347.32 mi (558.95 km) |
| Diest to Oberstdorf | 341.48 mi (549.57 km) |
| Diest to Obertraubling | 345.39 mi (555.86 km) |
| Diest to Obertshausen | 177.79 mi (286.13 km) |
| Diest to Oberursel | 163.77 mi (263.56 km) |
| Diest to Ochsenfurt | 239.65 mi (385.68 km) |
| Diest to Ochsenhausen | 297.74 mi (479.17 km) |
| Diest to Ochtrup | 124.67 mi (200.63 km) |
| Diest to Odenthal | 89.85 mi (144.59 km) |
| Diest to Oelde | 145.83 mi (234.69 km) |
| Diest to Oelsnitz | 313.72 mi (504.88 km) |
| Diest to Oer-Erkenschwick | 105.29 mi (169.44 km) |
| Diest to Oerlinghausen | 169.71 mi (273.12 km) |
