| Northeim to Oestrich-Winkel | 146.70 mi (236.09 km) |
| Northeim to Offenburg | 241.88 mi (389.27 km) |
| Northeim to Oftersheim | 172.97 mi (278.37 km) |
| Northeim to Ohrdruf | 68.45 mi (110.16 km) |
| Northeim to Ohringen | 174.59 mi (280.98 km) |
| Northeim to Olbernhau | 161.19 mi (259.40 km) |
| Northeim to Olching | 249.24 mi (401.11 km) |
| Northeim to Oldenburg | 124.61 mi (200.55 km) |
| Northeim to Oldenburg in Holstein | 182.89 mi (294.34 km) |
| Northeim to Olfen | 112.07 mi (180.36 km) |
| Northeim to Olpe | 104.97 mi (168.93 km) |
| Northeim to Olsberg | 69.74 mi (112.24 km) |
| Northeim to Oranienburg | 154.87 mi (249.24 km) |
| Northeim to Ortenberg | 101.98 mi (164.13 km) |
| Northeim to Oschatz | 136.50 mi (219.67 km) |
