Saturday, September 26, 2026.
Join us for our most unique race ever! Starting in the Natural Bridge Caverns, which is part of the Comal Caverns network, this race kicks off with breathtaking views of the world below our feet as the start line is in the depths of the Natural Bridge Caverns. Once you emerge to the sunshine of a beautiful day, you’ll wind your way through beautiful trails over flowing hills and through wooded sections. You can choose from 4 to 16 miles distance or go big with the Last Person standing format.
Natural Bridge Caverns in San Antonio.
This race is made possible by the great work of Great Springs Project. Don’t know what that is yet? Check out this link or just come to the race and learn how the Edwards Aquifer under these trails is critical to sustainable clean water for our growing cities. We are incredibly proud to support their grandiose efforts, alongside the city of San Antonio via this trail race!
While every racer will get some cool swag, September 1 is the deadline to get a shirt.
Click Here for Tejas Trails Policies (you really do want to know this stuff)
Sep 26, 2026
Distance — GSTR - Natural Bridge Caverns - LPS Ruck (Last Person Standing Ruck)
Type — Running
07:00
$180.00
Sep 26, 2026
Distance — GSTR - Natural Bridge Caverns - LPS Run (Last Person Standing Run)
Type — Running
07:00
$190.00
Sep 26, 2026
Distance — 16 Miles
Type — Running
07:45
$120.00
Sep 26, 2026
Distance — 4 Miles
Type — Running
07:45
$85.00
Sep 26, 2026
Distance — 8 Miles
Type — Running
07:45
$110.00
Sep 26, 2026
Distance — GSTR - Natural Bridge Caverns - 8mi Ruck
Type — Running
07:45
$115.00
Sep 26, 2026
Distance — 1 Miles
Type — Running
10:30
$18.00
Sep 26, 2026
Distance — 16 Miles
Type — Running
63 days remaining
$115.00
Sep 26, 2026
Distance — 4 Miles
Type — Running
63 days remaining
$70.00
Sep 26, 2026
Distance — 8 Miles
Type — Running
63 days remaining
$90.00
Sep 26, 2026
Distance — GSTR - Natural Bridge Caverns - 8mi Ruck
Type — Running
63 days remaining
$95.00
Sep 26, 2026
Distance — GSTR - Natural Bridge Caverns - LPS Ruck (Last Person Standing Ruck)
Type — Running
63 days remaining
$175.00
Sep 26, 2026
Distance — GSTR - Natural Bridge Caverns - LPS Run (Last Person Standing Run)
Type — Running
63 days remaining
$170.00
Sep 26, 2026
Distance — 1 Miles
Type — Running
63 days remaining
$14.00
These values represent the 3-year monthly averages for September in San Antonio.
Learn more about the host city, San Antonio.
San Antonio is the second largest city in the state of Texas and the 7th largest in the United States. It's the 24th largest metropolitan area in the country. Visited by more than 31 million annual visitors, San Antonio is a beautiful city at the axis of three different geological terrains: Hill Country, South Texas Plains and Prairie and Lakes. There's a lot to do in this city: fine art museums, historical missions and plenty of amusement parks in addition to great dining and lots of drinking. The culture and people are vibrant and interesting. San Antonio's downtown is one of the most lively in the nation.
Read more launchRead what other athletes have to say about their experience at the Great Springs Trail Race - Natural Bridge Caverns.
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location_on San Antonio, Texas, US
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location_on San Antonio, Texas, US
calendar_today Aug 29, 2026
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