| San Marcos to Enterprise (Nevada) | 227.36 mi (365.90 km) |
| San Marcos to Enumclaw (Washington) | 1,004.11 mi (1,615.96 km) |
| San Marcos to Ephrata (Pennsylvania) | 2,302.53 mi (3,705.56 km) |
| San Marcos to Erie (Colorado) | 823.88 mi (1,325.90 km) |
| San Marcos to Erie (Pennsylvania) | 2,104.45 mi (3,386.79 km) |
| San Marcos to Erlanger (Kentucky) | 1,854.13 mi (2,983.94 km) |
| San Marcos to Escanaba (Michigan) | 1,811.21 mi (2,914.86 km) |
| San Marcos to Escondido (California) | 5.90 mi (9.50 km) |
| San Marcos to Española (New Mexico) | 661.76 mi (1,065.01 km) |
| San Marcos to Essex (Maryland) | 2,290.23 mi (3,685.77 km) |
| San Marcos to Essex Junction (Vermont) | 2,464.94 mi (3,966.94 km) |
| San Marcos to Estelle (Louisiana) | 1,606.63 mi (2,585.62 km) |
| San Marcos to Estero (Florida) | 2,160.92 mi (3,477.66 km) |
| San Marcos to Euclid (Ohio) | 2,027.22 mi (3,262.50 km) |
| San Marcos to Eufaula (Alabama) | 1,860.32 mi (2,993.90 km) |
