| Aalst to Obernburg am Main | 237.17 mi (381.68 km) |
| Aalst to Obernkirchen | 236.41 mi (380.47 km) |
| Aalst to Oberschleissheim | 384.65 mi (619.03 km) |
| Aalst to Oberstdorf | 372.45 mi (599.40 km) |
| Aalst to Obertraubling | 385.92 mi (621.08 km) |
| Aalst to Obertshausen | 219.08 mi (352.57 km) |
| Aalst to Oberursel | 205.46 mi (330.66 km) |
| Aalst to Ochsenfurt | 280.45 mi (451.34 km) |
| Aalst to Ochsenhausen | 330.74 mi (532.28 km) |
| Aalst to Ochtrup | 161.16 mi (259.36 km) |
| Aalst to Odenthal | 134.01 mi (215.66 km) |
| Aalst to Oelde | 187.70 mi (302.07 km) |
| Aalst to Oelsnitz | 357.49 mi (575.32 km) |
| Aalst to Oer-Erkenschwick | 147.03 mi (236.62 km) |
| Aalst to Oerlinghausen | 211.49 mi (340.36 km) |
