| Flemalle-Haute to Obernburg am Main | 170.89 mi (275.03 km) |
| Flemalle-Haute to Obernkirchen | 194.96 mi (313.76 km) |
| Flemalle-Haute to Oberschleissheim | 318.66 mi (512.83 km) |
| Flemalle-Haute to Oberstdorf | 310.16 mi (499.16 km) |
| Flemalle-Haute to Obertraubling | 319.57 mi (514.30 km) |
| Flemalle-Haute to Obertshausen | 153.15 mi (246.47 km) |
| Flemalle-Haute to Oberursel | 139.86 mi (225.08 km) |
| Flemalle-Haute to Ochsenfurt | 214.22 mi (344.75 km) |
| Flemalle-Haute to Ochsenhausen | 266.95 mi (429.62 km) |
| Flemalle-Haute to Ochtrup | 133.54 mi (214.91 km) |
| Flemalle-Haute to Odenthal | 78.13 mi (125.73 km) |
| Flemalle-Haute to Oelde | 144.11 mi (231.93 km) |
| Flemalle-Haute to Oelsnitz | 294.75 mi (474.35 km) |
| Flemalle-Haute to Oer-Erkenschwick | 105.76 mi (170.21 km) |
| Flemalle-Haute to Oerlinghausen | 167.53 mi (269.61 km) |
