| San Marcos to Savannah (Georgia) | 2,086.52 mi (3,357.93 km) |
| San Marcos to Sayreville (New Jersey) | 2,399.87 mi (3,862.21 km) |
| San Marcos to Sayville (New York) | 2,464.20 mi (3,965.75 km) |
| San Marcos to Scaggsville (Maryland) | 2,267.15 mi (3,648.63 km) |
| San Marcos to Scarsdale (New York) | 2,427.49 mi (3,906.66 km) |
| San Marcos to Schaumburg (Illinois) | 1,697.11 mi (2,731.23 km) |
| San Marcos to Schenectady (New York) | 2,419.75 mi (3,894.22 km) |
| San Marcos to Schererville (Indiana) | 1,722.47 mi (2,772.05 km) |
| San Marcos to Schertz (Texas) | 1,141.64 mi (1,837.29 km) |
| San Marcos to Schiller Park (Illinois) | 1,706.91 mi (2,747.01 km) |
| San Marcos to Schofield Barracks (Hawaii) | 2,617.15 mi (4,211.90 km) |
| San Marcos to Scotchtown (New York) | 2,396.39 mi (3,856.61 km) |
| San Marcos to Scottdale (Georgia) | 1,889.38 mi (3,040.66 km) |
| San Marcos to Scotts Valley (California) | 384.81 mi (619.29 km) |
| San Marcos to Scottsbluff (Nebraska) | 953.33 mi (1,534.24 km) |
