| Comacchio to Smyrna (Delaware) | 4,296.41 mi (6,914.41 km) |
| Comacchio to Smyrna (Georgia) | 4,916.05 mi (7,911.61 km) |
| Comacchio to Smyrna (Tennessee) | 4,903.73 mi (7,891.79 km) |
| Comacchio to Snellville (Georgia) | 4,894.38 mi (7,876.75 km) |
| Comacchio to Snoqualmie (Washington) | 5,480.59 mi (8,820.15 km) |
| Comacchio to Snyder (Texas) | 5,640.15 mi (9,076.95 km) |
| Comacchio to Socastee (South Carolina) | 4,684.53 mi (7,539.02 km) |
| Comacchio to Socorro (Texas) | 5,898.43 mi (9,492.60 km) |
| Comacchio to Soddy-Daisy (Tennessee) | 4,879.89 mi (7,853.43 km) |
| Comacchio to Solana Beach (California) | 6,201.35 mi (9,980.11 km) |
| Comacchio to Soledad (California) | 6,123.20 mi (9,854.33 km) |
| Comacchio to Solon (Ohio) | 4,452.89 mi (7,166.24 km) |
| Comacchio to Somers Point (New Jersey) | 4,252.34 mi (6,843.49 km) |
| Comacchio to Somerset (Kentucky) | 4,773.04 mi (7,681.46 km) |
| Comacchio to Somerset (New Jersey) | 4,199.54 mi (6,758.51 km) |
