| Gifhorn to Obernburg am Main | 192.85 mi (310.36 km) |
| Gifhorn to Obernkirchen | 62.18 mi (100.07 km) |
| Gifhorn to Oberschleissheim | 296.28 mi (476.82 km) |
| Gifhorn to Oberstdorf | 351.12 mi (565.07 km) |
| Gifhorn to Obertraubling | 253.49 mi (407.96 km) |
| Gifhorn to Obertshausen | 182.97 mi (294.47 km) |
| Gifhorn to Oberursel | 179.31 mi (288.57 km) |
| Gifhorn to Ochsenfurt | 197.23 mi (317.41 km) |
| Gifhorn to Ochsenhausen | 306.28 mi (492.91 km) |
| Gifhorn to Ochtrup | 142.98 mi (230.11 km) |
| Gifhorn to Odenthal | 177.80 mi (286.14 km) |
| Gifhorn to Oelde | 111.20 mi (178.96 km) |
| Gifhorn to Oelsnitz | 159.24 mi (256.27 km) |
| Gifhorn to Oer-Erkenschwick | 151.69 mi (244.12 km) |
| Gifhorn to Oerlinghausen | 87.34 mi (140.56 km) |
