| San Marcos to Sanford (Maine) | 2,580.13 mi (4,152.33 km) |
| San Marcos to Sanford (North Carolina) | 2,161.27 mi (3,478.23 km) |
| San Marcos to Sanger (California) | 280.81 mi (451.92 km) |
| San Marcos to Santa Ana (California) | 58.25 mi (93.74 km) |
| San Marcos to Santa Barbara (California) | 171.35 mi (275.76 km) |
| San Marcos to Santa Clara (California) | 398.08 mi (640.64 km) |
| San Marcos to Santa Clara (Oregon) | 823.48 mi (1,325.27 km) |
| San Marcos to Santa Clarita (California) | 116.69 mi (187.80 km) |
| San Marcos to Santa Cruz (California) | 382.12 mi (614.97 km) |
| San Marcos to Santa Fe (New Mexico) | 661.11 mi (1,063.95 km) |
| San Marcos to Santa Fe (Texas) | 1,326.53 mi (2,134.84 km) |
| San Marcos to Santa Fe Springs (California) | 75.21 mi (121.03 km) |
| San Marcos to Santa Maria (California) | 224.63 mi (361.51 km) |
| San Marcos to Santa Monica (California) | 97.09 mi (156.25 km) |
| San Marcos to Santa Paula (California) | 137.50 mi (221.28 km) |
