| Nis to Opwijk | 982.11 mi (1,580.55 km) |
| Nis to Ostend | 1,039.38 mi (1,672.72 km) |
| Nis to Oud-Heverlee | 959.13 mi (1,543.57 km) |
| Nis to Oud-Turnhout | 962.21 mi (1,548.52 km) |
| Nis to Oudenaarde | 1,001.76 mi (1,612.17 km) |
| Nis to Oudenburg | 1,034.99 mi (1,665.66 km) |
| Nis to Oupeye | 917.15 mi (1,476.02 km) |
| Nis to Overijse | 962.86 mi (1,549.58 km) |
| Nis to Overpelt | 942.45 mi (1,516.73 km) |
| Nis to Paal | 945.93 mi (1,522.33 km) |
| Nis to Peer | 938.26 mi (1,509.98 km) |
| Nis to Pepinster | 905.89 mi (1,457.90 km) |
| Nis to Peruwelz | 993.22 mi (1,598.43 km) |
| Nis to Perwez | 946.99 mi (1,524.04 km) |
| Nis to Philippeville | 945.43 mi (1,521.52 km) |
