BigTex Backyard Ultra: Last Runner Standing

Description

The Big Tex 2026 returns for its fourth year near Houston, hosted by Trail Racing Over Texas at Stephen F. Austin State Park in San Felipe. The Big Tex Backyard uses the classic “last runner standing” format: a 4.17‑mile yard begins every hour on the hour until only one runner remains. Standard backyard rules apply.

In 2026 we are also adding the Last Rucker Standing, a shorter loop following the same schedule for ruckers. Standard ruck rules apply for weights with no specific type/method required: 20 lbs. is used for those under 150 lbs., and 30 lbs. for those over 150 lbs.

The Free Lil Tex Kids run will happen right after the Noon lap start on a ~1km trail loop.

Backyard Format Rules

The Backyard format is simple: 100 miles divided into 24 hours give you 4.167 miles for a "yard" (lap). Every hour, on the hour, a new yard will start, and you must finish within the hour and be back in the starting corral for the next one to stay in the run. Complete as many as you can, last runner standing wins.

Register for your race today!

Campsite and RV site reservations must be made through the State Park Reservation system.