| Cities | Distance |
|---|---|
| Boom to Ostend | 63.49 mi (102.17 km) |
| Boom to Oud-Heverlee | 21.65 mi (34.85 km) |
| Boom to Oud-Turnhout | 31.19 mi (50.19 km) |
| Boom to Oudenaarde | 37.05 mi (59.63 km) |
| Boom to Oudenburg | 59.66 mi (96.01 km) |
| Boom to Oupeye | 61.36 mi (98.75 km) |
| Boom to Overijse | 21.96 mi (35.34 km) |
| Boom to Overpelt | 46.43 mi (74.72 km) |
| Boom to Paal | 35.14 mi (56.55 km) |
| Boom to Peer | 47.27 mi (76.08 km) |
| Boom to Pepinster | 72.66 mi (116.93 km) |
| Boom to Peruwelz | 51.99 mi (83.67 km) |
| Boom to Perwez | 37.27 mi (59.98 km) |
| Boom to Philippeville | 61.56 mi (99.07 km) |
| Boom to Plombieres | 73.10 mi (117.64 km) |