| Sint-Niklaas to Opwijk | 13.99 mi (22.51 km) |
| Sint-Niklaas to Ostend | 52.72 mi (84.84 km) |
| Sint-Niklaas to Oud-Heverlee | 32.69 mi (52.61 km) |
| Sint-Niklaas to Oud-Turnhout | 38.20 mi (61.48 km) |
| Sint-Niklaas to Oudenaarde | 31.88 mi (51.31 km) |
| Sint-Niklaas to Oudenburg | 49.10 mi (79.03 km) |
| Sint-Niklaas to Oupeye | 72.97 mi (117.43 km) |
| Sint-Niklaas to Overijse | 31.69 mi (51.01 km) |
| Sint-Niklaas to Overpelt | 55.68 mi (89.61 km) |
| Sint-Niklaas to Paal | 45.95 mi (73.95 km) |
| Sint-Niklaas to Peer | 57.27 mi (92.17 km) |
| Sint-Niklaas to Pepinster | 84.30 mi (135.67 km) |
| Sint-Niklaas to Peruwelz | 50.92 mi (81.95 km) |
| Sint-Niklaas to Perwez | 47.83 mi (76.98 km) |
| Sint-Niklaas to Philippeville | 69.24 mi (111.43 km) |
