| Round Lake Beach to Security-Widefield (Colorado) | 906.67 mi (1,459.14 km) |
| Round Lake Beach to Sedalia (Missouri) | 370.82 mi (596.78 km) |
| Round Lake Beach to Sedro-Woolley (Washington) | 1,693.45 mi (2,725.34 km) |
| Round Lake Beach to Seguin (Texas) | 1,040.63 mi (1,674.73 km) |
| Round Lake Beach to Selden (New York) | 782.40 mi (1,259.15 km) |
| Round Lake Beach to Selma (Alabama) | 690.72 mi (1,111.61 km) |
| Round Lake Beach to Selma (California) | 1,718.35 mi (2,765.41 km) |
| Round Lake Beach to Selma (Texas) | 1,051.04 mi (1,691.49 km) |
| Round Lake Beach to Seminole (Florida) | 1,047.41 mi (1,685.64 km) |
| Round Lake Beach to Seven Hills (Ohio) | 336.68 mi (541.83 km) |
| Round Lake Beach to Seven Oaks (South Carolina) | 687.35 mi (1,106.18 km) |
| Round Lake Beach to Severn (Maryland) | 636.00 mi (1,023.54 km) |
| Round Lake Beach to Severna Park (Maryland) | 643.58 mi (1,035.74 km) |
| Round Lake Beach to Sevierville (Tennessee) | 509.42 mi (819.83 km) |
| Round Lake Beach to Seymour (Indiana) | 263.39 mi (423.89 km) |
