| Welver to Smyrna (Delaware) | 3,911.70 mi (6,295.27 km) |
| Welver to Smyrna (Georgia) | 4,526.37 mi (7,284.49 km) |
| Welver to Smyrna (Tennessee) | 4,497.66 mi (7,238.28 km) |
| Welver to Snellville (Georgia) | 4,506.64 mi (7,252.73 km) |
| Welver to Snoqualmie (Washington) | 4,971.30 mi (8,000.53 km) |
| Welver to Snyder (Texas) | 5,199.00 mi (8,366.98 km) |
| Welver to Socastee (South Carolina) | 4,316.68 mi (6,947.02 km) |
| Welver to Socorro (Texas) | 5,444.16 mi (8,761.54 km) |
| Welver to Soddy-Daisy (Tennessee) | 4,481.60 mi (7,212.43 km) |
| Welver to Solana Beach (California) | 5,716.06 mi (9,199.11 km) |
| Welver to Soledad (California) | 5,625.28 mi (9,053.01 km) |
| Welver to Solon (Ohio) | 4,038.98 mi (6,500.12 km) |
| Welver to Somers Point (New Jersey) | 3,870.96 mi (6,229.70 km) |
| Welver to Somerset (Kentucky) | 4,368.58 mi (7,030.54 km) |
| Welver to Somerset (New Jersey) | 3,811.97 mi (6,134.77 km) |
