| Waterloo to Smyrna (Delaware) | 3,791.58 mi (6,101.96 km) |
| Waterloo to Smyrna (Georgia) | 4,408.67 mi (7,095.07 km) |
| Waterloo to Smyrna (Tennessee) | 4,386.17 mi (7,058.85 km) |
| Waterloo to Snellville (Georgia) | 4,388.23 mi (7,062.17 km) |
| Waterloo to Snoqualmie (Washington) | 4,936.02 mi (7,943.76 km) |
| Waterloo to Snyder (Texas) | 5,104.06 mi (8,214.19 km) |
| Waterloo to Socastee (South Carolina) | 4,191.41 mi (6,745.42 km) |
| Waterloo to Socorro (Texas) | 5,356.61 mi (8,620.64 km) |
| Waterloo to Soddy-Daisy (Tennessee) | 4,367.05 mi (7,028.08 km) |
| Waterloo to Solana Beach (California) | 5,650.67 mi (9,093.88 km) |
| Waterloo to Soledad (California) | 5,572.70 mi (8,968.40 km) |
| Waterloo to Solon (Ohio) | 3,930.32 mi (6,325.23 km) |
| Waterloo to Somers Point (New Jersey) | 3,749.63 mi (6,034.45 km) |
| Waterloo to Somerset (Kentucky) | 4,256.32 mi (6,849.89 km) |
| Waterloo to Somerset (New Jersey) | 3,692.75 mi (5,942.90 km) |
