| Neder-Over-Heembeek to Navodari | 1,209.80 mi (1,946.99 km) |
| Neder-Over-Heembeek to Negresti-Oas | 878.94 mi (1,414.52 km) |
| Neder-Over-Heembeek to Nehoiu | 1,076.24 mi (1,732.05 km) |
| Neder-Over-Heembeek to Ocna Mures | 938.82 mi (1,510.89 km) |
| Neder-Over-Heembeek to Odobesti | 1,095.43 mi (1,762.93 km) |
| Neder-Over-Heembeek to Odorheiu Secuiesc | 1,002.81 mi (1,613.87 km) |
| Neder-Over-Heembeek to Oltenita | 1,134.77 mi (1,826.23 km) |
| Neder-Over-Heembeek to Onesti | 1,067.55 mi (1,718.05 km) |
| Neder-Over-Heembeek to Oradea | 835.65 mi (1,344.84 km) |
| Neder-Over-Heembeek to Orastie | 928.16 mi (1,493.73 km) |
| Neder-Over-Heembeek to Oravita | 893.98 mi (1,438.73 km) |
| Neder-Over-Heembeek to Orsova | 935.02 mi (1,504.77 km) |
| Neder-Over-Heembeek to Otelu Rosu | 904.06 mi (1,454.94 km) |
| Neder-Over-Heembeek to Otopeni | 1,094.08 mi (1,760.75 km) |
| Neder-Over-Heembeek to Ovidiu | 1,209.34 mi (1,946.25 km) |
