| Hameln to Oestrich-Winkel | 156.76 mi (252.28 km) |
| Hameln to Offenburg | 258.88 mi (416.62 km) |
| Hameln to Oftersheim | 191.66 mi (308.44 km) |
| Hameln to Ohrdruf | 105.74 mi (170.16 km) |
| Hameln to Ohringen | 200.46 mi (322.60 km) |
| Hameln to Olbernhau | 197.61 mi (318.02 km) |
| Hameln to Olching | 282.93 mi (455.33 km) |
| Hameln to Oldenburg | 86.83 mi (139.74 km) |
| Hameln to Oldenburg in Holstein | 164.45 mi (264.65 km) |
| Hameln to Olfen | 88.59 mi (142.57 km) |
| Hameln to Olpe | 99.70 mi (160.45 km) |
| Hameln to Olsberg | 64.15 mi (103.23 km) |
| Hameln to Oranienburg | 169.18 mi (272.28 km) |
| Hameln to Ortenberg | 121.26 mi (195.15 km) |
| Hameln to Oschatz | 169.42 mi (272.65 km) |
