| Nidderau to Obernburg am Main | 30.29 mi (48.74 km) |
| Nidderau to Obernkirchen | 139.64 mi (224.72 km) |
| Nidderau to Oberschleissheim | 183.17 mi (294.79 km) |
| Nidderau to Oberstdorf | 206.02 mi (331.55 km) |
| Nidderau to Obertraubling | 171.06 mi (275.29 km) |
| Nidderau to Obertshausen | 13.00 mi (20.93 km) |
| Nidderau to Oberursel | 14.64 mi (23.56 km) |
| Nidderau to Ochsenfurt | 66.40 mi (106.86 km) |
| Nidderau to Ochsenhausen | 157.74 mi (253.86 km) |
| Nidderau to Ochtrup | 154.03 mi (247.89 km) |
| Nidderau to Odenthal | 95.05 mi (152.96 km) |
| Nidderau to Oelde | 114.14 mi (183.69 km) |
| Nidderau to Oelsnitz | 144.52 mi (232.58 km) |
| Nidderau to Oer-Erkenschwick | 120.02 mi (193.16 km) |
| Nidderau to Oerlinghausen | 119.04 mi (191.58 km) |
