| Santo Tirso to Opwijk | 897.34 mi (1,444.12 km) |
| Santo Tirso to Ostend | 871.30 mi (1,402.22 km) |
| Santo Tirso to Oud-Heverlee | 906.78 mi (1,459.31 km) |
| Santo Tirso to Oud-Turnhout | 939.24 mi (1,511.56 km) |
| Santo Tirso to Oudenaarde | 873.36 mi (1,405.54 km) |
| Santo Tirso to Oudenburg | 871.52 mi (1,402.58 km) |
| Santo Tirso to Oupeye | 933.99 mi (1,503.11 km) |
| Santo Tirso to Overijse | 900.12 mi (1,448.61 km) |
| Santo Tirso to Overpelt | 948.75 mi (1,526.87 km) |
| Santo Tirso to Paal | 932.74 mi (1,501.10 km) |
| Santo Tirso to Peer | 946.21 mi (1,522.78 km) |
| Santo Tirso to Pepinster | 933.96 mi (1,503.06 km) |
| Santo Tirso to Peruwelz | 856.94 mi (1,379.11 km) |
| Santo Tirso to Perwez | 902.25 mi (1,452.03 km) |
| Santo Tirso to Philippeville | 874.52 mi (1,407.40 km) |
