| San Marcos to Germantown (Tennessee) | 1,567.86 mi (2,523.23 km) |
| San Marcos to Germantown (Wisconsin) | 1,713.86 mi (2,758.19 km) |
| San Marcos to Gibsonton (Florida) | 2,094.48 mi (3,370.74 km) |
| San Marcos to Gig Harbor (Washington) | 1,021.31 mi (1,643.64 km) |
| San Marcos to Gilbert (Arizona) | 313.94 mi (505.23 km) |
| San Marcos to Gillette (Wyoming) | 992.27 mi (1,596.91 km) |
| San Marcos to Gilroy (California) | 365.56 mi (588.32 km) |
| San Marcos to Gladeview (Florida) | 2,265.74 mi (3,646.35 km) |
| San Marcos to Gladstone (Missouri) | 1,325.21 mi (2,132.73 km) |
| San Marcos to Gladstone (Oregon) | 894.20 mi (1,439.08 km) |
| San Marcos to Glasgow (Delaware) | 2,326.63 mi (3,744.35 km) |
| San Marcos to Glasgow (Kentucky) | 1,779.06 mi (2,863.12 km) |
| San Marcos to Glassboro (New Jersey) | 2,360.17 mi (3,798.32 km) |
| San Marcos to Glassmanor (Maryland) | 2,262.78 mi (3,641.60 km) |
| San Marcos to Glen Allen (Virginia) | 2,240.39 mi (3,605.56 km) |
