| Klamath Falls to Silver Firs (Washington) | 390.39 mi (628.27 km) |
| Klamath Falls to Silver Spring (Maryland) | 2,330.98 mi (3,751.34 km) |
| Klamath Falls to Silver Springs Shores (Florida) | 2,382.43 mi (3,834.16 km) |
| Klamath Falls to Silverdale (Washington) | 378.94 mi (609.84 km) |
| Klamath Falls to Silverton (Oregon) | 198.78 mi (319.91 km) |
| Klamath Falls to Simi Valley (California) | 573.42 mi (922.83 km) |
| Klamath Falls to Simpsonville (South Carolina) | 2,178.71 mi (3,506.29 km) |
| Klamath Falls to Sioux City (Iowa) | 1,291.37 mi (2,078.26 km) |
| Klamath Falls to Sioux Falls (South Dakota) | 1,266.48 mi (2,038.20 km) |
| Klamath Falls to Skokie (Illinois) | 1,732.38 mi (2,788.00 km) |
| Klamath Falls to Sleepy Hollow (New York) | 2,441.03 mi (3,928.45 km) |
| Klamath Falls to Slidell (Louisiana) | 1,948.70 mi (3,136.13 km) |
| Klamath Falls to Smithfield (North Carolina) | 2,355.48 mi (3,790.77 km) |
| Klamath Falls to Smithfield (Utah) | 511.02 mi (822.41 km) |
| Klamath Falls to Smithville (Missouri) | 1,429.73 mi (2,300.93 km) |
