| Santarem to Smyrna (Delaware) | 3,492.06 mi (5,619.93 km) |
| Santarem to Smyrna (Georgia) | 4,100.32 mi (6,598.82 km) |
| Santarem to Smyrna (Tennessee) | 4,129.43 mi (6,645.67 km) |
| Santarem to Snellville (Georgia) | 4,074.84 mi (6,557.82 km) |
| Santarem to Snoqualmie (Washington) | 5,173.54 mi (8,326.01 km) |
| Santarem to Snyder (Texas) | 4,943.48 mi (7,955.77 km) |
| Santarem to Socastee (South Carolina) | 3,827.81 mi (6,160.27 km) |
| Santarem to Socorro (Texas) | 5,239.12 mi (8,431.55 km) |
| Santarem to Soddy-Daisy (Tennessee) | 4,086.44 mi (6,576.50 km) |
| Santarem to Solana Beach (California) | 5,672.26 mi (9,128.61 km) |
| Santarem to Soledad (California) | 5,679.56 mi (9,140.37 km) |
| Santarem to Solon (Ohio) | 3,717.97 mi (5,983.50 km) |
| Santarem to Somers Point (New Jersey) | 3,441.95 mi (5,539.28 km) |
| Santarem to Somerset (Kentucky) | 3,999.32 mi (6,436.29 km) |
| Santarem to Somerset (New Jersey) | 3,406.25 mi (5,481.83 km) |
