Browse all 2023-2024 San Antonio half marathons by month below. For each race, you’ll find the history of the half marathon and the course, the most recent year’s course maps, elevation profiles, runner reviews, pricing, and how to sign up. When you view a race, you might also find contact info if you’re having problems with your registration or need to contact the race directors.
This calendar has all half marathons within 50 miles of downtown San Antonio which include races in New Braunfels half marathons, Helotes half marathons, and San Marcos half marathons.
We dedicated dozens of hours every month searching for races to include in the San Antonio half marathons calendar. If you happen to see any half marathon not included, contact us at info@halfmarathons.net to submit your race.
San Antonio Half Marathons by Date
July 2023
| Sat Jul 22 | Stars and Stripes Half Marathon 10K & 5K | New Braunfels TX |
| Sat Jul 22 | Project X: San Antonio Heat Wave Half Marathon | San Antonio TX |
August 2023
| Sat Aug 11 | Dragon's Den Half Marathon | San Antonio TX |
September 2023
| Sat Sept 23 | Texas Tough Half Marathon Relay and 5K | Helotes TX |
October 2023
| Sat Oct 7 | Alamo Beer Series Battle of Hillotes Half Marathon 10k & 5k | Helotes TX |
| Sat Oct 14 | Great Springs Trail Race | San Marcos TX |
| Sat Oct 14 | Texas Eclipse Ring of Fire Half Marathon | Boerne TX |
November 2023
| Sat Nov 4 | Alamo Beer Race Series – Battle of Leon Creek Half Marathon | San Antonio TX |
| Sat Nov 11 | New Braunfels Half Marathon | New Braunfels TX |
| Sun Nov 19 | Two Rivers Half Marathon & Ryan Bielke 5K | New Braunfels TX |
December 2023
| Sun Dec 3 | Rock ‘n’ Roll San Antonio | San Antonio TX |
| Sat Dec 16 | Stars at Night Half San Antonio | San Antonio TX |
January 2024
| Sat Jan 13 | River Road Run | Comfort Texas |
| Jan TBD 2024 | Das Dreizehn.Eins (13.1) – Half Marathon & 5K | New Braunfels TX |
February 2024
| Sun Feb 11 | San Marcos Half Marathon | San Marcos TX |
| Feb TBD 2024 | Be My Valentine 5K & Half Marathon | San Antonio TX |
March 2024
| Sun Mar 24 | Run the Alamo | San Antonio TX |
April 2024
| Apr TBD 2024 | SARR Mission Half Marathon 10k & 5k | San Antonio TX |
| Apr TBD 2024 | Siesta Half Marathon 10K & 5K | San Antonio TX |
May 2024
| May TBD 2024 | Natural Bridge Caverns Half Marathon 10K & 5K | San Antonio TX |
Frequently Asked Questions About San Antonio Half Marathons
The most popular San Antonio half marathon is the Rock ‘n’ Roll San Antonio half marathon which attracts about 20,000 runners annually.
If looking for popularity and crowds, the Rock ‘n’ Roll San Antonio half marathon is the best San Antonio half marathon. If looking for scenery, the Natural Bridge Caverns Half Marathon runs through the largest commercial caverns in the United States.
