| Waterloo to Security-Widefield (Colorado) | 4,916.75 mi (7,912.74 km) |
| Waterloo to Sedalia (Missouri) | 4,508.94 mi (7,256.44 km) |
| Waterloo to Sedro-Woolley (Washington) | 4,888.59 mi (7,867.42 km) |
| Waterloo to Seguin (Texas) | 5,159.00 mi (8,302.61 km) |
| Waterloo to Selden (New York) | 3,617.76 mi (5,822.21 km) |
| Waterloo to Selma (Alabama) | 4,581.89 mi (7,373.84 km) |
| Waterloo to Selma (California) | 5,514.57 mi (8,874.85 km) |
| Waterloo to Selma (Texas) | 5,172.43 mi (8,324.23 km) |
| Waterloo to Seminole (Florida) | 4,635.91 mi (7,460.78 km) |
| Waterloo to Seven Hills (Ohio) | 3,939.72 mi (6,340.37 km) |
| Waterloo to Seven Oaks (South Carolina) | 4,262.21 mi (6,859.36 km) |
| Waterloo to Severn (Maryland) | 3,842.92 mi (6,184.58 km) |
| Waterloo to Severna Park (Maryland) | 3,839.95 mi (6,179.80 km) |
| Waterloo to Sevierville (Tennessee) | 4,272.14 mi (6,875.35 km) |
| Waterloo to Seymour (Indiana) | 4,217.45 mi (6,787.32 km) |
