| Boussu to Obernburg am Main | 240.19 mi (386.54 km) |
| Boussu to Obernkirchen | 262.17 mi (421.93 km) |
| Boussu to Oberschleissheim | 380.71 mi (612.69 km) |
| Boussu to Oberstdorf | 360.72 mi (580.53 km) |
| Boussu to Obertraubling | 387.34 mi (623.37 km) |
| Boussu to Obertshausen | 223.94 mi (360.40 km) |
| Boussu to Oberursel | 211.48 mi (340.34 km) |
| Boussu to Ochsenfurt | 283.37 mi (456.04 km) |
| Boussu to Ochsenhausen | 321.70 mi (517.72 km) |
| Boussu to Ochtrup | 190.96 mi (307.33 km) |
| Boussu to Odenthal | 151.00 mi (243.02 km) |
| Boussu to Oelde | 212.07 mi (341.29 km) |
| Boussu to Oelsnitz | 368.27 mi (592.67 km) |
| Boussu to Oer-Erkenschwick | 171.75 mi (276.41 km) |
| Boussu to Oerlinghausen | 235.93 mi (379.69 km) |
