| San Marcos to Seymour (Tennessee) | 1,902.30 mi (3,061.46 km) |
| San Marcos to Shady Hills (Florida) | 2,072.06 mi (3,334.66 km) |
| San Marcos to Shafter (California) | 199.04 mi (320.32 km) |
| San Marcos to Shaker Heights (Ohio) | 2,024.95 mi (3,258.84 km) |
| San Marcos to Shakopee (Minnesota) | 1,497.38 mi (2,409.79 km) |
| San Marcos to Sharon (Pennsylvania) | 2,078.02 mi (3,344.25 km) |
| San Marcos to Sharonville (Ohio) | 1,864.60 mi (3,000.79 km) |
| San Marcos to Shasta Lake (California) | 594.97 mi (957.51 km) |
| San Marcos to Shawnee (Kansas) | 1,309.48 mi (2,107.41 km) |
| San Marcos to Shawnee (Oklahoma) | 1,162.35 mi (1,870.63 km) |
| San Marcos to Sheboygan (Wisconsin) | 1,741.57 mi (2,802.79 km) |
| San Marcos to Shelby (North Carolina) | 2,030.30 mi (3,267.45 km) |
| San Marcos to Shelbyville (Indiana) | 1,792.60 mi (2,884.91 km) |
| San Marcos to Shelbyville (Kentucky) | 1,817.62 mi (2,925.18 km) |
| San Marcos to Shelbyville (Tennessee) | 1,753.75 mi (2,822.38 km) |
