| San Marcos to The Villages (Florida) | 2,094.02 mi (3,369.99 km) |
| San Marcos to The Woodlands (Texas) | 1,287.91 mi (2,072.69 km) |
| San Marcos to Thibodaux (Louisiana) | 1,566.31 mi (2,520.74 km) |
| San Marcos to Thomasville (Georgia) | 1,943.76 mi (3,128.18 km) |
| San Marcos to Thomasville (North Carolina) | 2,107.87 mi (3,392.28 km) |
| San Marcos to Thonotosassa (Florida) | 2,094.55 mi (3,370.85 km) |
| San Marcos to Thornton (Colorado) | 823.91 mi (1,325.95 km) |
| San Marcos to Thousand Oaks (California) | 122.06 mi (196.44 km) |
| San Marcos to Three Lakes (Florida) | 2,261.40 mi (3,639.37 km) |
| San Marcos to Tiffin (Ohio) | 1,938.41 mi (3,119.57 km) |
| San Marcos to Tifton (Georgia) | 1,960.48 mi (3,155.09 km) |
| San Marcos to Tigard (Oregon) | 899.93 mi (1,448.30 km) |
| San Marcos to Tillmans Corner (Alabama) | 1,703.32 mi (2,741.23 km) |
| San Marcos to Timberlake (Virginia) | 2,145.58 mi (3,452.98 km) |
| San Marcos to Timberlane (Louisiana) | 1,610.18 mi (2,591.34 km) |
