| Boulder City to Sesimbra | 5,458.01 mi (8,783.81 km) |
| Boulder City to Setubal | 5,463.51 mi (8,792.67 km) |
| Boulder City to Sever do Vouga | 5,392.91 mi (8,679.05 km) |
| Boulder City to Silves | 5,539.61 mi (8,915.13 km) |
| Boulder City to Sines | 5,488.70 mi (8,833.21 km) |
| Boulder City to Sintra | 5,430.73 mi (8,739.91 km) |
| Boulder City to Sobrado de Paiva | 5,384.46 mi (8,665.46 km) |
| Boulder City to Sobral de Monte Agraco | 5,431.70 mi (8,741.47 km) |
| Boulder City to Soure | 5,410.44 mi (8,707.26 km) |
| Boulder City to Tabua | 5,422.66 mi (8,726.93 km) |
| Boulder City to Tavira | 5,576.77 mi (8,974.95 km) |
| Boulder City to Tomar | 5,438.48 mi (8,752.39 km) |
| Boulder City to Tondela | 5,413.81 mi (8,712.69 km) |
| Boulder City to Torre de Moncorvo | 5,424.08 mi (8,729.21 km) |
| Boulder City to Torres Novas | 5,439.17 mi (8,753.49 km) |
