| Haaltert to Obernburg am Main | 238.06 mi (383.12 km) |
| Haaltert to Obernkirchen | 239.08 mi (384.76 km) |
| Haaltert to Oberschleissheim | 385.04 mi (619.66 km) |
| Haaltert to Oberstdorf | 372.15 mi (598.92 km) |
| Haaltert to Obertraubling | 386.77 mi (622.44 km) |
| Haaltert to Obertshausen | 220.11 mi (354.23 km) |
| Haaltert to Oberursel | 206.58 mi (332.45 km) |
| Haaltert to Ochsenfurt | 281.37 mi (452.83 km) |
| Haaltert to Ochsenhausen | 330.67 mi (532.16 km) |
| Haaltert to Ochtrup | 164.06 mi (264.03 km) |
| Haaltert to Odenthal | 135.92 mi (218.74 km) |
| Haaltert to Oelde | 190.25 mi (306.17 km) |
| Haaltert to Oelsnitz | 359.08 mi (577.88 km) |
| Haaltert to Oer-Erkenschwick | 149.57 mi (240.71 km) |
| Haaltert to Oerlinghausen | 214.05 mi (344.49 km) |
