If you live in San Antonio, your tubing options are usually the Comal, the Guadalupe, or a long Frio drive. The spring-fed San Marcos at Kingsbury is the underrated fourth option — and for many SA families, it's now the default.
Why It Beats the Comal for SA Locals
The Comal is two miles long and packed on weekends. The San Marcos at Son's is a longer, slower float with cypress shade and far fewer crowds. See tubing details.
Make It a Day or a Weekend
Pair tubing with a private cabana for shade and parking, or stay overnight in a log cabin and float Saturday and Sunday.