| Slupca to Security-Widefield (Colorado) | 5,265.40 mi (8,473.85 km) |
| Slupca to Sedalia (Missouri) | 4,916.50 mi (7,912.34 km) |
| Slupca to Sedro-Woolley (Washington) | 5,087.07 mi (8,186.85 km) |
| Slupca to Seguin (Texas) | 5,586.45 mi (8,990.53 km) |
| Slupca to Selden (New York) | 4,098.00 mi (6,595.09 km) |
| Slupca to Selma (Alabama) | 5,047.80 mi (8,123.64 km) |
| Slupca to Selma (California) | 5,784.26 mi (9,308.87 km) |
| Slupca to Selma (Texas) | 5,598.15 mi (9,009.36 km) |
| Slupca to Seminole (Florida) | 5,137.71 mi (8,268.34 km) |
| Slupca to Seven Hills (Ohio) | 4,383.92 mi (7,055.23 km) |
| Slupca to Seven Oaks (South Carolina) | 4,745.07 mi (7,636.46 km) |
| Slupca to Severn (Maryland) | 4,318.75 mi (6,950.35 km) |
| Slupca to Severna Park (Maryland) | 4,316.50 mi (6,946.74 km) |
| Slupca to Sevierville (Tennessee) | 4,736.78 mi (7,623.10 km) |
| Slupca to Seymour (Indiana) | 4,657.02 mi (7,494.75 km) |
