| Waterloo to Stephenville (Texas) | 5,029.87 mi (8,094.80 km) |
| Waterloo to Sterling (Colorado) | 4,765.59 mi (7,669.48 km) |
| Waterloo to Sterling (Illinois) | 4,225.88 mi (6,800.90 km) |
| Waterloo to Sterling (Virginia) | 3,877.59 mi (6,240.38 km) |
| Waterloo to Sterling Heights (Michigan) | 3,937.72 mi (6,337.15 km) |
| Waterloo to Steubenville (Ohio) | 3,945.79 mi (6,350.14 km) |
| Waterloo to Stevens Point (Wisconsin) | 4,091.52 mi (6,584.67 km) |
| Waterloo to Stevenson Ranch (California) | 5,611.01 mi (9,030.04 km) |
| Waterloo to Stillwater (Minnesota) | 4,183.46 mi (6,732.62 km) |
| Waterloo to Stillwater (Oklahoma) | 4,782.48 mi (7,696.66 km) |
| Waterloo to Stockbridge (Georgia) | 4,413.57 mi (7,102.96 km) |
| Waterloo to Stockton (California) | 5,481.44 mi (8,821.52 km) |
| Waterloo to Stone Ridge (Virginia) | 3,887.14 mi (6,255.74 km) |
| Waterloo to Stonecrest (Georgia) | 4,402.05 mi (7,084.41 km) |
| Waterloo to Stony Brook (New York) | 3,619.57 mi (5,825.13 km) |
