| Santo Tirso to Security-Widefield (Colorado) | 4,804.36 mi (7,731.87 km) |
| Santo Tirso to Sedalia (Missouri) | 4,297.42 mi (6,916.03 km) |
| Santo Tirso to Sedro-Woolley (Washington) | 5,035.99 mi (8,104.64 km) |
| Santo Tirso to Seguin (Texas) | 4,879.52 mi (7,852.82 km) |
| Santo Tirso to Selden (New York) | 3,280.29 mi (5,279.11 km) |
| Santo Tirso to Selma (Alabama) | 4,237.82 mi (6,820.12 km) |
| Santo Tirso to Selma (California) | 5,518.23 mi (8,880.73 km) |
| Santo Tirso to Selma (Texas) | 4,896.14 mi (7,879.57 km) |
| Santo Tirso to Seminole (Florida) | 4,200.53 mi (6,760.10 km) |
| Santo Tirso to Seven Hills (Ohio) | 3,674.08 mi (5,912.85 km) |
| Santo Tirso to Seven Oaks (South Carolina) | 3,889.11 mi (6,258.92 km) |
| Santo Tirso to Severn (Maryland) | 3,505.69 mi (5,641.86 km) |
| Santo Tirso to Severna Park (Maryland) | 3,501.02 mi (5,634.35 km) |
| Santo Tirso to Sevierville (Tennessee) | 3,943.42 mi (6,346.33 km) |
| Santo Tirso to Seymour (Indiana) | 3,949.32 mi (6,355.82 km) |
