Great Springs Trail Race - Natural Bridge Caverns
Great Springs Trail Race - Natural Bridge Caverns is a trail running and running race on September 26, 2026 in San Antonio, TX, with entry fees from $10 to $140.
- Date
- September 26, 2026 (65 days to go)
- Price
- $10–$140
- Sports
- Trail RunningRunning
From the Organizer
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)
Events
Weather
Typical Conditions
It's too far out for a forecast, so here's what weather on this date is normally like in the area. A race day forecast will replace this as race week approaches.
Typical High
87°
Typical Low
63°
Chance of Rain
17%
Based on US Climate Normals data from New Braunfels, 9 mi from the venue.
Host City
About San Antonio, TX
Population
1,458,954
as of 2023
City Elevation
781 ft
Nearest Airport
SAT
San Antonio International Airport · 5 mi
Time Zone
Central Time
From Endurance Grid
A big city race. Expect multiple lodging options and plenty to do the day before.
Race Location
Your Next Start Line
What Are You
Waiting For?
Every finish line starts with a single decision. Claim your spot at Great Springs Trail Race - Natural Bridge Caverns, put it on the calendar, and turn “someday” into a start date.
65
Days to train
- Race
- Great Springs Trail Race - Natural Bridge Caverns
- Date
- September 26, 2026
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From Endurance Grid
About These Sports
This race spans more than one sport — here’s a guide to each, so you can understand what’s involved and decide if it’s the right fit. For course distances, logistics, and race-day specifics, always defer to the race organizer’s event page.
Trail Running
Running off-road — dirt, singletrack, and mountain paths — from 5Ks to ultras. The terrain makes for an exciting twist and adventure in your running journey.
Running
From 5K to marathon, running races are an accessible entry point into endurance sport. There's a distance for every fitness level and a community at every start line.
Coming Up
More Trail Running races near San Antonio, TX
SARR Rocky Horror Trail Run
5K · 10K · 50K · From $40 · Eisenhower Park
18 miles away
Friends of Government Canyon Recharge Run 8K/15K
8K / 5 Mile · 15K · From $50 · 12861 Galm Road
28 miles away
Jingle Trails
5K · 10K · From $25 · 13102 Jones Maltsberger Road
11 miles away
Dragon Trails 50k & 10K
5K · 50K · From $30 · 838 Old Pearsall Rd
28 miles away
Plan your trip
Make it a Racecation
Coming from out of town? There's more to San Antonio than race day. We'll help you line up nearby lodging, flights, a rental car, and things to do so you can make the most of your racecation.
Plan your trip to San AntonioFrequently Asked Questions (FAQs)
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Great Springs Trail Race - Natural Bridge Caverns
Sep 26, 2026