Distance from Trinity, TX to San Marcos, TX is 192Miles or 309 Km. You can get this distance about 3 hours 27 mins. If you want to planning travel with plane for 170 Miles or 274 Km, You can get this distance about 51 mins .
A car with an average MPG will needs 8.89 gallons of gas to get the route between these points.
The estimated cost of gas to get between Trinity, TX and San Marcos, TX is $20.18.
During the route, an average car will release 174.17 pounds of CO2 to the atmosphere. Your carbon footprint is 0.91 pounds of CO2 per mile.
* Average US MPG used for calculations is 21.6 MPG.
* Average US gas price used for calculation is 2.27 per gallon.