| Denver (Colorado) to San Marcos | 821.50 mi (1,322.07 km) |
| Portland (Oregon) to San Marcos | 904.91 mi (1,456.32 km) |
| Seattle (Washington) to San Marcos | 1,036.34 mi (1,667.83 km) |
| Dallas (Texas) to San Marcos | 1,181.39 mi (1,901.27 km) |
| Los Angeles (California) to San Marcos | 98.00 mi (157.72 km) |
| Houston (Texas) to San Marcos | 1,302.19 mi (2,095.67 km) |
| Minneapolis (Minnesota) to San Marcos | 1,512.11 mi (2,433.50 km) |
| St. Louis (Missouri) to San Marcos | 1,548.50 mi (2,492.07 km) |
| Chicago (Illinois) to San Marcos | 1,714.53 mi (2,759.26 km) |
| Atlanta (Georgia) to San Marcos | 1,880.66 mi (3,026.64 km) |
| Detroit (Michigan) to San Marcos | 1,952.48 mi (3,142.21 km) |
| Tampa (Florida) to San Marcos | 2,086.79 mi (3,358.36 km) |
| Washington (District of Columbia) to San Marcos | 2,260.74 mi (3,638.31 km) |
| Miami (Florida) to San Marcos | 2,268.70 mi (3,651.12 km) |
| Baltimore (Maryland) to San Marcos | 2,281.17 mi (3,671.18 km) |
| Philadelphia (Pennsylvania) to San Marcos | 2,358.17 mi (3,795.11 km) |
| Brooklyn (New York) to San Marcos | 2,419.11 mi (3,893.18 km) |
| New York (New York) to San Marcos | 2,420.31 mi (3,895.12 km) |
| Queens (New York) to San Marcos | 2,426.86 mi (3,905.66 km) |
| San Diego (California) to San Marcos | 21.20 mi (34.12 km) |
| Las Vegas (Nevada) to San Marcos | 239.96 mi (386.18 km) |
| Boston (Massachusetts) to San Marcos | 2,564.37 mi (4,126.96 km) |
| Riverside (California) to San Marcos | 56.92 mi (91.61 km) |
| Phoenix (Arizona) to San Marcos | 295.00 mi (474.75 km) |
| San Francisco (California) to San Marcos | 435.67 mi (701.14 km) |