The Thunder Run - San Antonio
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The Thunder Run 2027 - San Antonio, TX
The Thunder Run is a timed endurance event at the Land Heritage Institute in San Antonio on February 6–7, 2027. Participants complete repeated loops on a 4.1-mile trail that includes packed dirt and gravel, some rough terrain, root systems, and signs of heavy animal tracking. Each loop contains roughly 98 ft of climb and 95 ft of descent.
Lap tracking uses a patch system: after each completed loop an athlete earns a patch worth 4.1 miles. Completing 25 loops equals 102.5 miles; athletes who reach 100 miles in the 24 hour event receive a commemorative belt buckle.
Event options:
- 6 hour individual event
- 12 hour individual event
- 24 hour individual event
- 24 hour relay
A kickoff day at VFW Post 76 on February 5 includes packet pickup, a sponsor expo, a spaghetti dinner, and a silent auction. Each participant receives a commemorative Relentless Running Co. performance pullover and additional sponsor gifts. Parking is available for non participants with a suggested $5 donation to the Land Heritage Institute. Eight 30 amp RV hookups are available for the weekend for a fee; tent space and rentals are offered. Restrooms will be on site. The event will provide limited food and hydration; participants should plan their own nutrition. Transportation to and from the venue is limited. Visit the organization's website for the most recent information.
