| Cities | Distance |
|---|---|
| Boom to Obernburg am Main | 226.85 mi (365.08 km) |
| Boom to Obernkirchen | 219.31 mi (352.95 km) |
| Boom to Oberschleissheim | 376.57 mi (606.03 km) |
| Boom to Oberstdorf | 367.95 mi (592.15 km) |
| Boom to Obertraubling | 375.65 mi (604.55 km) |
| Boom to Obertshausen | 208.16 mi (334.99 km) |
| Boom to Oberursel | 194.20 mi (312.53 km) |
| Boom to Ochsenfurt | 269.94 mi (434.43 km) |
| Boom to Ochsenhausen | 325.13 mi (523.24 km) |
| Boom to Ochtrup | 143.75 mi (231.35 km) |
| Boom to Odenthal | 119.47 mi (192.26 km) |
| Boom to Oelde | 170.90 mi (275.03 km) |
| Boom to Oelsnitz | 343.91 mi (553.47 km) |
| Boom to Oer-Erkenschwick | 130.27 mi (209.65 km) |
| Boom to Oerlinghausen | 194.63 mi (313.23 km) |