| San Marcos to Gonzales (Louisiana) | 1,552.64 mi (2,498.74 km) |
| San Marcos to Gonzalez (Florida) | 1,756.63 mi (2,827.03 km) |
| San Marcos to Goodlettsville (Tennessee) | 1,737.04 mi (2,795.50 km) |
| San Marcos to Goodyear (Arizona) | 278.33 mi (447.93 km) |
| San Marcos to Goose Creek (South Carolina) | 2,140.71 mi (3,445.14 km) |
| San Marcos to Goshen (Indiana) | 1,805.82 mi (2,906.18 km) |
| San Marcos to Goulds (Florida) | 2,264.17 mi (3,643.83 km) |
| San Marcos to Grafton (Wisconsin) | 1,723.79 mi (2,774.17 km) |
| San Marcos to Graham (North Carolina) | 2,145.08 mi (3,452.17 km) |
| San Marcos to Graham (Washington) | 996.88 mi (1,604.33 km) |
| San Marcos to Grain Valley (Missouri) | 1,341.09 mi (2,158.28 km) |
| San Marcos to Granbury (Texas) | 1,126.45 mi (1,812.84 km) |
| San Marcos to Grand Forks (North Dakota) | 1,460.07 mi (2,349.76 km) |
| San Marcos to Grand Haven (Michigan) | 1,804.44 mi (2,903.97 km) |
| San Marcos to Grand Island (Nebraska) | 1,165.59 mi (1,875.84 km) |
