| Waterloo to Superior (Colorado) | 4,868.36 mi (7,834.88 km) |
| Waterloo to Superior (Wisconsin) | 4,079.65 mi (6,565.56 km) |
| Waterloo to Surprise (Arizona) | 5,455.92 mi (8,780.46 km) |
| Waterloo to Susanville (California) | 5,318.28 mi (8,558.95 km) |
| Waterloo to Sussex (Wisconsin) | 4,107.99 mi (6,611.17 km) |
| Waterloo to Suwanee (Georgia) | 4,381.35 mi (7,051.10 km) |
| Waterloo to Swansea (Illinois) | 4,394.24 mi (7,071.85 km) |
| Waterloo to Sweetwater (Florida) | 4,638.00 mi (7,464.14 km) |
| Waterloo to Sweetwater (Texas) | 5,098.45 mi (8,205.16 km) |
| Waterloo to Sycamore (Illinois) | 4,178.81 mi (6,725.14 km) |
| Waterloo to Sylacauga (Alabama) | 4,512.85 mi (7,262.73 km) |
| Waterloo to Sylvania (Ohio) | 4,003.58 mi (6,443.15 km) |
| Waterloo to Syosset (New York) | 3,638.72 mi (5,855.95 km) |
| Waterloo to Syracuse (New York) | 3,648.88 mi (5,872.31 km) |
| Waterloo to Syracuse (Utah) | 5,028.39 mi (8,092.42 km) |
