| Hilo to Silver Firs (Washington) | 2,676.76 mi (4,307.83 km) |
| Hilo to Silver Spring (Maryland) | 4,746.34 mi (7,638.49 km) |
| Hilo to Silver Springs Shores (Florida) | 4,574.46 mi (7,361.88 km) |
| Hilo to Silverdale (Washington) | 2,648.68 mi (4,262.64 km) |
| Hilo to Silverton (Oregon) | 2,541.36 mi (4,089.92 km) |
| Hilo to Simi Valley (California) | 2,436.54 mi (3,921.23 km) |
| Hilo to Simpsonville (South Carolina) | 4,500.86 mi (7,243.44 km) |
| Hilo to Sioux City (Iowa) | 3,728.56 mi (6,000.54 km) |
| Hilo to Sioux Falls (South Dakota) | 3,719.39 mi (5,985.78 km) |
| Hilo to Skokie (Illinois) | 4,168.72 mi (6,708.90 km) |
| Hilo to Sleepy Hollow (New York) | 4,887.78 mi (7,866.13 km) |
| Hilo to Slidell (Louisiana) | 4,101.54 mi (6,600.80 km) |
| Hilo to Smithfield (North Carolina) | 4,711.45 mi (7,582.35 km) |
| Hilo to Smithfield (Utah) | 2,946.35 mi (4,741.68 km) |
| Hilo to Smithville (Missouri) | 3,807.81 mi (6,128.08 km) |
