| Calexico to Smyrna (Delaware) | 2,257.26 mi (3,632.71 km) |
| Calexico to Smyrna (Georgia) | 1,784.54 mi (2,871.94 km) |
| Calexico to Smyrna (Tennessee) | 1,662.22 mi (2,675.09 km) |
| Calexico to Snellville (Georgia) | 1,813.86 mi (2,919.12 km) |
| Calexico to Snoqualmie (Washington) | 1,078.16 mi (1,735.13 km) |
| Calexico to Snyder (Texas) | 847.22 mi (1,363.48 km) |
| Calexico to Socastee (South Carolina) | 2,099.86 mi (3,379.40 km) |
| Calexico to Socorro (Texas) | 544.76 mi (876.71 km) |
| Calexico to Soddy-Daisy (Tennessee) | 1,739.69 mi (2,799.76 km) |
| Calexico to Solana Beach (California) | 104.55 mi (168.26 km) |
| Calexico to Soledad (California) | 421.93 mi (679.03 km) |
| Calexico to Solon (Ohio) | 1,957.68 mi (3,150.58 km) |
| Calexico to Somers Point (New Jersey) | 2,310.77 mi (3,718.82 km) |
| Calexico to Somerset (Kentucky) | 1,768.59 mi (2,846.28 km) |
| Calexico to Somerset (New Jersey) | 2,315.42 mi (3,726.31 km) |
