| San Marcos to Kalispell (Montana) | 1,052.38 mi (1,693.63 km) |
| San Marcos to Kaneohe (Hawaii) | 2,604.31 mi (4,191.24 km) |
| San Marcos to Kankakee (Illinois) | 1,696.52 mi (2,730.29 km) |
| San Marcos to Kannapolis (North Carolina) | 2,079.54 mi (3,346.70 km) |
| San Marcos to Kansas City (Kansas) | 1,314.27 mi (2,115.11 km) |
| San Marcos to Kansas City (Missouri) | 1,324.27 mi (2,131.20 km) |
| San Marcos to Kapaa (Hawaii) | 2,673.03 mi (4,301.82 km) |
| San Marcos to Kapolei (Hawaii) | 2,622.29 mi (4,220.17 km) |
| San Marcos to Katy (Texas) | 1,276.33 mi (2,054.06 km) |
| San Marcos to Kaukauna (Wisconsin) | 1,726.15 mi (2,777.96 km) |
| San Marcos to Kaysville (Utah) | 616.58 mi (992.29 km) |
| San Marcos to Kearney (Missouri) | 1,337.61 mi (2,152.68 km) |
| San Marcos to Kearney (Nebraska) | 1,124.74 mi (1,810.10 km) |
| San Marcos to Kearns (Utah) | 592.33 mi (953.27 km) |
| San Marcos to Kearny (New Jersey) | 2,409.98 mi (3,878.49 km) |
