San Marcos sits along one of the largest spring-fed rivers in Texas, known for its crystal-clear water, popular tubing scene, and glass-bottom boat tours.

Why Visit San Marcos

The San Marcos River stays a constant 72 degrees year-round, making this Texas Hill Country town a favorite for tubing, swimming, and unique glass-bottom boat rides.

Top Experiences

  • San Marcos River tubing: Float down the clear spring-fed river on an inner tube, a favorite local and visitor tradition.
  • Glass-bottom boat tour: Take a ride on one of the last operating glass-bottom boats in the US, viewing underwater springs.
  • San Marcos Springs: Snorkel or swim in the headwaters of the river, among the largest springs in Texas.
  • Downtown San Marcos: Browse the historic downtown square, home to shops, restaurants, and Texas State University nearby.
  • Outlet shopping: Visit one of Texas’s largest outlet shopping centers, a popular stop just off the interstate.
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Practical Tips

  • Summer weekends bring heavy tubing crowds; visit on a weekday or in shoulder season for a quieter float.
  • The river stays a cool, constant temperature year-round, making it enjoyable even outside peak summer heat.
  • San Marcos sits conveniently between Austin and San Antonio, making it an easy stop between the two cities.

FAQ

Is San Marcos, Texas worth visiting?
Yes, for its clear spring-fed river, tubing, and glass-bottom boat tours.

How far is San Marcos from Austin?
About 30 to 40 minutes by car.

Is the San Marcos River cold?
It stays a consistent, refreshing temperature around 72°F year-round.