| Neder-Over-Heembeek to Oignies | 67.73 mi (109.00 km) |
| Neder-Over-Heembeek to Oissel | 181.24 mi (291.67 km) |
| Neder-Over-Heembeek to Olivet | 237.61 mi (382.40 km) |
| Neder-Over-Heembeek to Ollioules | 540.59 mi (869.99 km) |
| Neder-Over-Heembeek to Olonne-sur-Mer | 411.62 mi (662.45 km) |
| Neder-Over-Heembeek to Oloron-Sainte-Marie | 581.61 mi (936.01 km) |
| Neder-Over-Heembeek to Onet Village | 459.07 mi (738.80 km) |
| Neder-Over-Heembeek to Onnaing | 49.36 mi (79.43 km) |
| Neder-Over-Heembeek to Orange | 467.61 mi (752.54 km) |
| Neder-Over-Heembeek to Orchies | 57.88 mi (93.14 km) |
| Neder-Over-Heembeek to Orleans | 235.06 mi (378.30 km) |
| Neder-Over-Heembeek to Orly | 173.38 mi (279.03 km) |
| Neder-Over-Heembeek to Ormesson-sur-Marne | 167.61 mi (269.74 km) |
| Neder-Over-Heembeek to Orsay | 180.91 mi (291.15 km) |
| Neder-Over-Heembeek to Orthez | 566.06 mi (910.99 km) |
