| Santo Tirso to Montalegre | 48.60 mi (78.22 km) |
| Santo Tirso to Montemor-o-Novo | 185.87 mi (299.13 km) |
| Santo Tirso to Montemor-o-Velho | 81.40 mi (131.00 km) |
| Santo Tirso to Montijo | 184.53 mi (296.97 km) |
| Santo Tirso to Mortagua | 63.37 mi (101.98 km) |
| Santo Tirso to Moura | 227.60 mi (366.28 km) |
| Santo Tirso to Murtosa | 42.36 mi (68.16 km) |
| Santo Tirso to Nazare | 123.84 mi (199.30 km) |
| Santo Tirso to Nelas | 64.96 mi (104.54 km) |
| Santo Tirso to Obidos | 141.24 mi (227.30 km) |
| Santo Tirso to Odemira | 259.25 mi (417.23 km) |
| Santo Tirso to Odivelas | 179.70 mi (289.20 km) |
| Santo Tirso to Oeiras | 188.54 mi (303.42 km) |
| Santo Tirso to Olhao | 299.48 mi (481.97 km) |
| Santo Tirso to Oliveira de Azemeis | 34.09 mi (54.86 km) |
