Shortest distance between San Marcos and Austin is 29.05 miles (46.76 km).
Flight distance from San Marcos, TX to Austin, TX is 29.05 miles. Estimated flight time is 00 hours 03 minutes.
The driving distance from San Marcos, Texas to Austin, Texas is: 32.11 miles (51.67 km) by car.
Driving from San Marcos to Austin will take approximately 00 hours 36 minutes.
The distance between San Marcos and Austin is 52 km if you choose to drive by road. You can go 00 hours 34 minutes if you drive your car at an average speed of 90 kilometers / hour. For different choices, please review the avg. speed travel time table on the below.
There is no time difference between San Marcos and Austin. The current time is 08:23:26.
|Average Speed||Travel Time|
|30 mph (48.3 km/h)||01 hours 04 minutes|
|40 mph (64.37 km/h)||00 hours 48 minutes|
|50 mph (80.47 km/h)||00 hours 38 minutes|
|60 mph (96.56 km/h)||00 hours 32 minutes|
|70 mph (112.65 km/h)||00 hours 27 minutes|
|75 mph (120.7 km/h)||00 hours 25 minutes|
|80 mph (128.75 km/h)||00 hours 24 minutes|
A car with a fuel efficiency of 8.3 l/100 km will need 4.29 liters (1.13 gallon) of gas to cover the route between San Marcos and Austin.
The estimated cost of gas to go from San Marcos to Austin is $3.83 (diesel $4.21).
Take a look at our Gas Cost Calculator feature. It will figure out how much it will cost to drive this particular distance.
The average gas price per gallon of daily gas for calculations is $3.38 (Diesel $3.72) /gallon. Last changed prices on December 06, 2021.
The place names are translated into coordinates to approximate the distance between San Marcos and Austin (latitude and longitude). Cities, states, and countries each have their own regional center. The Haversine formula is used to measure the radius.