Big Tex Backyard Ultra
San Felipe, United States • 18 Oct 2025
The Big Tex Backyard Ultra is a unique running event held at Stephen F. Austin State Park in San Felipe, Texas. This "last runner standing" format challenges participants to complete a 4.17-mile loop every hour until only one runner remains.
The event includes a fully stocked aid station and offers participants a Big Tex hoodie and a customized poster. Runners who complete 24 laps will earn a 100-mile buckle, while the overall winner receives a cash prize based on their mileage. The event also features a kids' race, the Lil Tex Kids K, making it a family-friendly occasion. Visit the organization's website for the most recent information.