| Hamme to Obernburg am Main | 236.38 mi (380.41 km) |
| Hamme to Obernkirchen | 228.62 mi (367.93 km) |
| Hamme to Oberschleissheim | 385.51 mi (620.42 km) |
| Hamme to Oberstdorf | 375.63 mi (604.51 km) |
| Hamme to Obertraubling | 385.20 mi (619.91 km) |
| Hamme to Obertshausen | 217.82 mi (350.54 km) |
| Hamme to Oberursel | 203.93 mi (328.20 km) |
| Hamme to Ochsenfurt | 279.53 mi (449.85 km) |
| Hamme to Ochsenhausen | 333.22 mi (536.26 km) |
| Hamme to Ochtrup | 152.27 mi (245.06 km) |
| Hamme to Odenthal | 129.60 mi (208.57 km) |
| Hamme to Oelde | 180.49 mi (290.47 km) |
| Hamme to Oelsnitz | 354.01 mi (569.73 km) |
| Hamme to Oer-Erkenschwick | 139.91 mi (225.17 km) |
| Hamme to Oerlinghausen | 204.18 mi (328.59 km) |
