| Ronkonkoma to Security-Widefield (Colorado) | 1,674.37 mi (2,694.63 km) |
| Ronkonkoma to Sedalia (Missouri) | 1,075.54 mi (1,730.92 km) |
| Ronkonkoma to Sedro-Woolley (Washington) | 2,427.71 mi (3,907.02 km) |
| Ronkonkoma to Seguin (Texas) | 1,594.31 mi (2,565.80 km) |
| Ronkonkoma to Selden (New York) | 6.21 mi (9.99 km) |
| Ronkonkoma to Selma (Alabama) | 962.83 mi (1,549.52 km) |
| Ronkonkoma to Selma (California) | 2,494.89 mi (4,015.14 km) |
| Ronkonkoma to Selma (Texas) | 1,611.29 mi (2,593.12 km) |
| Ronkonkoma to Seminole (Florida) | 1,049.91 mi (1,689.67 km) |
| Ronkonkoma to Seven Hills (Ohio) | 446.76 mi (719.00 km) |
| Ronkonkoma to Seven Oaks (South Carolina) | 640.91 mi (1,031.45 km) |
| Ronkonkoma to Severn (Maryland) | 221.42 mi (356.35 km) |
| Ronkonkoma to Severna Park (Maryland) | 217.58 mi (350.16 km) |
| Ronkonkoma to Sevierville (Tennessee) | 659.34 mi (1,061.11 km) |
| Ronkonkoma to Seymour (Indiana) | 688.32 mi (1,107.75 km) |
