Autumn Harvest 50K • 20-Miler • 10-Miler • 5-Miler • Full • Half • 10K • 5K • Big Bastrop Backyard Ultra (Last Runner & Last Rucker Standing)
Bastrop, TX
Backyard Ultra50K+7
Open until Oct 9from $65.99
Half Marathons Near San Antonio, TX
As of October 6, 2026, Crewable lists 14 upcoming half marathons near San Antonio, TX from October 2026 to November 2026. The next is Autumn Harvest 50K • 20-Miler • 10-Miler • 5-Miler • Full • Half • 10K • 5K • Big Bastrop Backyard Ultra (Last Runner & Last Rucker Standing) on October 10 in Bastrop, TX. Registration is open for 12.
Sources: UltraSignup, RunSignUp, UTMB, race organizers and race websites
Race calendar
October 2026
11 racesHalloween Trick or Trot Run 5K/10K/13.1 AUSTIN/ROUNDROCK
Austin, TXHalf Marathon10K+2Open until Oct 31from $30Halloween Trick or Trot Run 5K/10K/13.1 SAN ANTONIO
San Antonio, TXHalf Marathon10K+2Open until Oct 31from $30
November 2026
3 racesVeterans Day Freedom Run 5K/10K/13.1 AUSTIN/ROUNDROCK
Austin, TXHalf Marathon10K+2Open until Nov 14from $30Veterans Day Freedom Run 5K/10K/13.1 SAN ANTONIO
San Antonio, TXHalf Marathon10K+2Open until Nov 14from $30
Quick answers
What is the next half marathon near San Antonio, TX?
Autumn Harvest 50K • 20-Miler • 10-Miler • 5-Miler • Full • Half • 10K • 5K • Big Bastrop Backyard Ultra (Last Runner & Last Rucker Standing), on Saturday, October 10, 2026, in Bastrop, TX. Distances: Backyard Ultra, 50K, Marathon.
What is the closest half marathon to San Antonio?
Coffee Lovers Run 5K/10K/13.1 SAN ANTONIO in San Antonio, TX, about 1 mile from San Antonio, on October 10, 2026.
How many half marathons near San Antonio, TX have open registration?
12 of the 14 list registration as open as of October 6, 2026, including Autumn Harvest 50K • 20-Miler • 10-Miler • 5-Miler • Full • Half • 10K • 5K • Big Bastrop Backyard Ultra (Last Runner & Last Rucker Standing), Coffee Lovers Run 5K/10K/13.1 SAN ANTONIO and Cookie Run 5K/10K/13.1 SAN ANTONIO.
What is the busiest month for half marathons near San Antonio, TX?
October 2026, with 11 of the 14. November 2026 follows with 3.
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