| Mercer Island to San Lorenzo de Descardazar | 5,547.95 mi (8,928.56 km) |
| Mercer Island to San Lorenzo de El Escorial | 5,262.99 mi (8,469.97 km) |
| Mercer Island to San Martin de la Vega | 5,302.35 mi (8,533.31 km) |
| Mercer Island to San Martin de Valdeiglesias | 5,267.19 mi (8,476.73 km) |
| Mercer Island to San Pedro de Ribas | 5,408.94 mi (8,704.85 km) |
| Mercer Island to San Roque | 5,461.11 mi (8,788.80 km) |
| Mercer Island to San Sebastian de la Gomera | 5,452.52 mi (8,774.99 km) |
| Mercer Island to San Sebastian de los Reyes | 5,282.13 mi (8,500.77 km) |
| Mercer Island to San Vicente de Baracaldo | 5,151.44 mi (8,290.44 km) |
| Mercer Island to San Vicente de Castellet | 5,388.59 mi (8,672.11 km) |
| Mercer Island to San Vicente del Raspeig | 5,500.00 mi (8,851.40 km) |
| Mercer Island to San Vicente dels Horts | 5,408.34 mi (8,703.89 km) |
| Mercer Island to Sangenjo | 5,013.82 mi (8,068.96 km) |
| Mercer Island to Sanlucar de Barrameda | 5,397.73 mi (8,686.81 km) |
| Mercer Island to Sanlucar la Mayor | 5,369.46 mi (8,641.31 km) |
