| Grimbergen to Nowy Sacz | 724.47 mi (1,165.93 km) |
| Grimbergen to Nowy Targ | 697.45 mi (1,122.44 km) |
| Grimbergen to Nowy Tomysl | 512.38 mi (824.59 km) |
| Grimbergen to Nysa | 566.89 mi (912.32 km) |
| Grimbergen to Oborniki | 543.69 mi (874.98 km) |
| Grimbergen to Oborniki Slaskie | 542.89 mi (873.69 km) |
| Grimbergen to Olawa | 561.73 mi (904.02 km) |
| Grimbergen to Olecko | 789.35 mi (1,270.33 km) |
| Grimbergen to Olesnica | 564.02 mi (907.70 km) |
| Grimbergen to Olesno | 610.55 mi (982.58 km) |
| Grimbergen to Olkusz | 666.04 mi (1,071.89 km) |
| Grimbergen to Olsztyn | 705.35 mi (1,135.15 km) |
| Grimbergen to Opalenica | 524.09 mi (843.45 km) |
| Grimbergen to Opoczno | 688.53 mi (1,108.08 km) |
| Grimbergen to Opole | 591.17 mi (951.40 km) |
