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Great Springs Trail Race - Natural Bridge Caverns

Name: Great Springs Trail Race - Natural Bridge Caverns
Start: 2026-09-26
End: 2026-09-26
Location: San Antonio, Texas

location_city San Antonio

location_on Texas

flag United States

calendar_today 26 Sep, 2026

directions_run Running

language Official Website

About the Event

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)

Races Offered

GSTR - Natural Bridge Caverns - LPS Ruck (Last Person Standing Ruck)

Sep 26, 2026

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Distance — GSTR - Natural Bridge Caverns - LPS Ruck (Last Person Standing Ruck)

terrain

Type — Trail running

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07:00

GSTR - Natural Bridge Caverns - LPS Run (Last Person Standing Run)

Sep 26, 2026

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Distance — GSTR - Natural Bridge Caverns - LPS Run (Last Person Standing Run)

terrain

Type — Trail running

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07:00

GSTR - Natural Bridge Caverns - 16mi

Sep 26, 2026

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Distance — 16 Miles

terrain

Type — Trail running

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07:45

GSTR - Natural Bridge Caverns - 4mi

Sep 26, 2026

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Distance — 4 Miles

terrain

Type — Trail running

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07:45

GSTR - Natural Bridge Caverns - 8mi

Sep 26, 2026

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Distance — 8 Miles

terrain

Type — Trail running

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07:45

GSTR - Natural Bridge Caverns - 8mi Ruck

Sep 26, 2026

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Distance — GSTR - Natural Bridge Caverns - 8mi Ruck

terrain

Type — Trail running

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07:45

GSTR - Natural Bridge Caverns - Youth 1- Mile Trail Race (12 & under)

Sep 26, 2026

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Distance — 1 Miles

terrain

Type — Trail running

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10:30

Weather Overview

These values represent the 3-year monthly averages for September in San Antonio.

Temp (°C)

Feels Like (°C)

thermostat 23.3° / 34.3°

wb_sunny 25.5° / 34.6°

Wind (km/h)

Humidity (%)

air 10.4 /

water_drop 59.1%

Temp (°C)

Feels Like (°C)

Wind (km/h)

Humidity (%)

thermostat 23.3° / 34.3°

wb_sunny 25.5° / 34.6°

air 10.4 km/h

water_drop 59.1%

About 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.