| Hiddenhausen to Obernburg am Main | 162.37 mi (261.31 km) |
| Hiddenhausen to Obernkirchen | 22.30 mi (35.89 km) |
| Hiddenhausen to Oberschleissheim | 300.35 mi (483.37 km) |
| Hiddenhausen to Oberstdorf | 336.91 mi (542.21 km) |
| Hiddenhausen to Obertraubling | 270.46 mi (435.27 km) |
| Hiddenhausen to Obertshausen | 145.40 mi (234.00 km) |
| Hiddenhausen to Oberursel | 135.67 mi (218.34 km) |
| Hiddenhausen to Ochsenfurt | 185.00 mi (297.72 km) |
| Hiddenhausen to Ochsenhausen | 288.97 mi (465.06 km) |
| Hiddenhausen to Ochtrup | 60.48 mi (97.34 km) |
| Hiddenhausen to Odenthal | 101.37 mi (163.14 km) |
| Hiddenhausen to Oelde | 30.41 mi (48.94 km) |
| Hiddenhausen to Oelsnitz | 195.28 mi (314.27 km) |
| Hiddenhausen to Oer-Erkenschwick | 68.58 mi (110.37 km) |
| Hiddenhausen to Oerlinghausen | 13.98 mi (22.50 km) |
