| Santo Tirso to Sestao | 310.56 mi (499.80 km) |
| Santo Tirso to Sevilla | 312.26 mi (502.53 km) |
| Santo Tirso to Sevilla La Nueva | 241.75 mi (389.05 km) |
| Santo Tirso to Silla | 445.37 mi (716.75 km) |
| Santo Tirso to Silleda | 95.19 mi (153.19 km) |
| Santo Tirso to Sitges | 533.00 mi (857.78 km) |
| Santo Tirso to Socuellamos | 330.33 mi (531.62 km) |
| Santo Tirso to Soller | 595.71 mi (958.71 km) |
| Santo Tirso to Solsona | 517.09 mi (832.18 km) |
| Santo Tirso to Son Servera | 632.21 mi (1,017.44 km) |
| Santo Tirso to Sonseca | 262.67 mi (422.73 km) |
| Santo Tirso to Sopelana | 313.79 mi (505.00 km) |
| Santo Tirso to Soria | 311.62 mi (501.51 km) |
| Santo Tirso to Suances | 268.01 mi (431.33 km) |
| Santo Tirso to Sueca | 454.25 mi (731.04 km) |
