| Heist-op-den-Berg to Oignies | 86.41 mi (139.07 km) |
| Heist-op-den-Berg to Oissel | 200.39 mi (322.49 km) |
| Heist-op-den-Berg to Olivet | 255.81 mi (411.69 km) |
| Heist-op-den-Berg to Ollioules | 551.42 mi (887.42 km) |
| Heist-op-den-Berg to Olonne-sur-Mer | 430.84 mi (693.38 km) |
| Heist-op-den-Berg to Oloron-Sainte-Marie | 599.37 mi (964.59 km) |
| Heist-op-den-Berg to Onet Village | 474.47 mi (763.58 km) |
| Heist-op-den-Berg to Onnaing | 68.57 mi (110.35 km) |
| Heist-op-den-Berg to Orange | 479.87 mi (772.28 km) |
| Heist-op-den-Berg to Orchies | 76.85 mi (123.68 km) |
| Heist-op-den-Berg to Orleans | 253.29 mi (407.63 km) |
| Heist-op-den-Berg to Orly | 191.86 mi (308.76 km) |
| Heist-op-den-Berg to Ormesson-sur-Marne | 185.95 mi (299.26 km) |
| Heist-op-den-Berg to Orsay | 199.56 mi (321.16 km) |
| Heist-op-den-Berg to Orthez | 584.02 mi (939.88 km) |
