| San Marcos to Kennewick (Washington) | 908.71 mi (1,462.43 km) |
| San Marcos to Kenosha (Wisconsin) | 1,715.49 mi (2,760.82 km) |
| San Marcos to Kent (Ohio) | 2,032.95 mi (3,271.72 km) |
| San Marcos to Kent (Washington) | 1,019.46 mi (1,640.67 km) |
| San Marcos to Kentwood (Michigan) | 1,833.21 mi (2,950.26 km) |
| San Marcos to Kerman (California) | 297.09 mi (478.12 km) |
| San Marcos to Kernersville (North Carolina) | 2,106.15 mi (3,389.52 km) |
| San Marcos to Kerrville (Texas) | 1,081.77 mi (1,740.94 km) |
| San Marcos to Kettering (Maryland) | 2,273.01 mi (3,658.05 km) |
| San Marcos to Kettering (Ohio) | 1,879.91 mi (3,025.42 km) |
| San Marcos to Kewanee (Illinois) | 1,592.85 mi (2,563.44 km) |
| San Marcos to Key Biscayne (Florida) | 2,273.68 mi (3,659.14 km) |
| San Marcos to Key Largo (Florida) | 2,274.36 mi (3,660.23 km) |
| San Marcos to Key West (Florida) | 2,210.91 mi (3,558.11 km) |
| San Marcos to Keystone (Florida) | 2,074.83 mi (3,339.12 km) |
