| San Marcos to Hazelwood (Missouri) | 1,541.90 mi (2,481.45 km) |
| San Marcos to Hazleton (Pennsylvania) | 2,313.01 mi (3,722.43 km) |
| San Marcos to Healdsburg (California) | 495.00 mi (796.62 km) |
| San Marcos to Heath (Ohio) | 1,971.62 mi (3,173.02 km) |
| San Marcos to Heber (Utah) | 600.90 mi (967.06 km) |
| San Marcos to Helena (Alabama) | 1,745.12 mi (2,808.50 km) |
| San Marcos to Helena (Montana) | 968.87 mi (1,559.25 km) |
| San Marcos to Hemet (California) | 42.64 mi (68.62 km) |
| San Marcos to Henderson (Kentucky) | 1,689.00 mi (2,718.18 km) |
| San Marcos to Henderson (Nevada) | 233.05 mi (375.05 km) |
| San Marcos to Henderson (North Carolina) | 2,197.25 mi (3,536.14 km) |
| San Marcos to Henderson (Texas) | 1,301.20 mi (2,094.08 km) |
| San Marcos to Hendersonville (North Carolina) | 1,978.88 mi (3,184.71 km) |
| San Marcos to Hendersonville (Tennessee) | 1,742.82 mi (2,804.80 km) |
| San Marcos to Hercules (California) | 441.27 mi (710.16 km) |
