| Donauworth to Obernburg am Main | 108.60 mi (174.78 km) |
| Donauworth to Obernkirchen | 257.25 mi (414.01 km) |
| Donauworth to Oberschleissheim | 46.90 mi (75.49 km) |
| Donauworth to Oberstdorf | 92.34 mi (148.60 km) |
| Donauworth to Obertraubling | 64.82 mi (104.32 km) |
| Donauworth to Obertshausen | 129.38 mi (208.22 km) |
| Donauworth to Oberursel | 144.07 mi (231.86 km) |
| Donauworth to Ochsenfurt | 73.52 mi (118.32 km) |
| Donauworth to Ochsenhausen | 58.39 mi (93.97 km) |
| Donauworth to Ochtrup | 289.55 mi (465.98 km) |
| Donauworth to Odenthal | 229.94 mi (370.06 km) |
| Donauworth to Oelde | 246.06 mi (396.00 km) |
| Donauworth to Oelsnitz | 133.49 mi (214.83 km) |
| Donauworth to Oer-Erkenschwick | 256.83 mi (413.33 km) |
| Donauworth to Oerlinghausen | 244.50 mi (393.49 km) |
