| Boulder City to San Lorenzo de Descardazar | 5,909.00 mi (9,509.62 km) |
| Boulder City to San Lorenzo de El Escorial | 5,571.90 mi (8,967.11 km) |
| Boulder City to San Martin de la Vega | 5,611.97 mi (9,031.59 km) |
| Boulder City to San Martin de Valdeiglesias | 5,571.62 mi (8,966.65 km) |
| Boulder City to San Pedro de Ribas | 5,772.73 mi (9,290.31 km) |
| Boulder City to San Roque | 5,713.80 mi (9,195.47 km) |
| Boulder City to San Sebastian de la Gomera | 5,508.06 mi (8,864.37 km) |
| Boulder City to San Sebastian de los Reyes | 5,594.77 mi (9,003.92 km) |
| Boulder City to San Vicente de Baracaldo | 5,497.23 mi (8,846.94 km) |
| Boulder City to San Vicente de Castellet | 5,756.94 mi (9,264.90 km) |
| Boulder City to San Vicente del Raspeig | 5,817.04 mi (9,361.62 km) |
| Boulder City to San Vicente dels Horts | 5,775.32 mi (9,294.48 km) |
| Boulder City to Sangenjo | 5,305.17 mi (8,537.84 km) |
| Boulder City to Sanlucar de Barrameda | 5,647.92 mi (9,089.45 km) |
| Boulder City to Sanlucar la Mayor | 5,627.50 mi (9,056.59 km) |
