| Barth to Obernburg am Main | 347.52 mi (559.28 km) |
| Barth to Obernkirchen | 207.62 mi (334.13 km) |
| Barth to Oberschleissheim | 425.52 mi (684.80 km) |
| Barth to Oberstdorf | 492.20 mi (792.13 km) |
| Barth to Obertraubling | 373.91 mi (601.74 km) |
| Barth to Obertshausen | 339.43 mi (546.26 km) |
| Barth to Oberursel | 336.57 mi (541.65 km) |
| Barth to Ochsenfurt | 344.77 mi (554.85 km) |
| Barth to Ochsenhausen | 451.02 mi (725.84 km) |
| Barth to Ochtrup | 272.65 mi (438.79 km) |
| Barth to Odenthal | 328.48 mi (528.64 km) |
| Barth to Oelde | 257.84 mi (414.95 km) |
| Barth to Oelsnitz | 273.90 mi (440.80 km) |
| Barth to Oer-Erkenschwick | 294.95 mi (474.68 km) |
| Barth to Oerlinghausen | 235.81 mi (379.50 km) |
