| San Marcos to Sacramento (California) | 445.66 mi (717.22 km) |
| San Marcos to Saddlebrooke (Arizona) | 367.83 mi (591.96 km) |
| San Marcos to Safety Harbor (Florida) | 2,071.93 mi (3,334.45 km) |
| San Marcos to Saginaw (Michigan) | 1,921.42 mi (3,092.22 km) |
| San Marcos to Saginaw (Texas) | 1,146.29 mi (1,844.78 km) |
| San Marcos to Sahuarita (Arizona) | 371.03 mi (597.12 km) |
| San Marcos to Saks (Alabama) | 1,799.63 mi (2,896.23 km) |
| San Marcos to Salem (Massachusetts) | 2,573.44 mi (4,141.54 km) |
| San Marcos to Salem (Ohio) | 2,058.48 mi (3,312.81 km) |
| San Marcos to Salem (Oregon) | 872.31 mi (1,403.84 km) |
| San Marcos to Salem (Virginia) | 2,101.43 mi (3,381.92 km) |
| San Marcos to Salem Lakes (Wisconsin) | 1,702.16 mi (2,739.36 km) |
| San Marcos to Salida (California) | 385.02 mi (619.63 km) |
| San Marcos to Salina (Kansas) | 1,159.13 mi (1,865.44 km) |
| San Marcos to Salinas (California) | 352.13 mi (566.70 km) |
