| Azpeitia to Silver Firs (Washington) | 5,161.96 mi (8,307.37 km) |
| Azpeitia to Silver Spring (Maryland) | 3,770.56 mi (6,068.14 km) |
| Azpeitia to Silver Springs Shores (Florida) | 4,386.95 mi (7,060.12 km) |
| Azpeitia to Silverdale (Washington) | 5,188.45 mi (8,350.00 km) |
| Azpeitia to Silverton (Oregon) | 5,331.72 mi (8,580.57 km) |
| Azpeitia to Simi Valley (California) | 5,755.90 mi (9,263.23 km) |
| Azpeitia to Simpsonville (South Carolina) | 4,172.97 mi (6,715.74 km) |
| Azpeitia to Sioux City (Iowa) | 4,486.74 mi (7,220.70 km) |
| Azpeitia to Sioux Falls (South Dakota) | 4,457.72 mi (7,174.00 km) |
| Azpeitia to Skokie (Illinois) | 4,141.27 mi (6,664.72 km) |
| Azpeitia to Sleepy Hollow (New York) | 3,554.87 mi (5,721.00 km) |
| Azpeitia to Slidell (Louisiana) | 4,707.71 mi (7,576.32 km) |
| Azpeitia to Smithfield (North Carolina) | 3,958.96 mi (6,371.33 km) |
| Azpeitia to Smithfield (Utah) | 5,117.47 mi (8,235.78 km) |
| Azpeitia to Smithville (Missouri) | 4,539.17 mi (7,305.09 km) |
