| Cluj-Napoca to Silver Firs (Washington) | 5,580.29 mi (8,980.61 km) |
| Cluj-Napoca to Silver Spring (Maryland) | 4,758.06 mi (7,657.36 km) |
| Cluj-Napoca to Silver Springs Shores (Florida) | 5,447.29 mi (8,766.56 km) |
| Cluj-Napoca to Silverdale (Washington) | 5,602.45 mi (9,016.28 km) |
| Cluj-Napoca to Silverton (Oregon) | 5,774.20 mi (9,292.68 km) |
| Cluj-Napoca to Simi Valley (California) | 6,368.38 mi (10,248.91 km) |
| Cluj-Napoca to Simpsonville (South Carolina) | 5,171.41 mi (8,322.59 km) |
| Cluj-Napoca to Sioux City (Iowa) | 5,259.52 mi (8,464.37 km) |
| Cluj-Napoca to Sioux Falls (South Dakota) | 5,212.96 mi (8,389.44 km) |
| Cluj-Napoca to Skokie (Illinois) | 5,000.34 mi (8,047.27 km) |
| Cluj-Napoca to Sleepy Hollow (New York) | 4,537.75 mi (7,302.81 km) |
| Cluj-Napoca to Slidell (Louisiana) | 5,690.80 mi (9,158.45 km) |
| Cluj-Napoca to Smithfield (North Carolina) | 4,979.21 mi (8,013.26 km) |
| Cluj-Napoca to Smithfield (Utah) | 5,732.22 mi (9,225.12 km) |
| Cluj-Napoca to Smithville (Missouri) | 5,370.46 mi (8,642.92 km) |
