| Northeim to Obernburg am Main | 134.33 mi (216.19 km) |
| Northeim to Obernkirchen | 53.93 mi (86.79 km) |
| Northeim to Oberschleissheim | 248.74 mi (400.31 km) |
| Northeim to Oberstdorf | 297.15 mi (478.22 km) |
| Northeim to Obertraubling | 212.08 mi (341.31 km) |
| Northeim to Obertshausen | 124.22 mi (199.91 km) |
| Northeim to Oberursel | 120.96 mi (194.66 km) |
| Northeim to Ochsenfurt | 142.13 mi (228.74 km) |
| Northeim to Ochsenhausen | 251.13 mi (404.16 km) |
| Northeim to Ochtrup | 124.54 mi (200.43 km) |
| Northeim to Odenthal | 132.82 mi (213.75 km) |
| Northeim to Oelde | 79.63 mi (128.15 km) |
| Northeim to Oelsnitz | 129.56 mi (208.50 km) |
| Northeim to Oer-Erkenschwick | 117.92 mi (189.77 km) |
| Northeim to Oerlinghausen | 59.73 mi (96.13 km) |
