Big Tex Backyard Ultra

  • Date Sat 7th November 2026
  • Time 7:00AM CST
  • Location San Felipe, Texas
  • Price Free - $128.20
  • Races 3 races
  • Distances Ultra, 1km

Event summary

Get ready for an exhilarating challenge at the Big Tex Backyard Ultra, happening on Saturday, November 7, 2026, at the scenic Stephen F. Austin State Park in Sealy, Austin. This β€œlast runner standing” event invites participants to tackle a 4.17-mile course every hour on the hour, pushing their limits until only one runner remains. With a well-maintained network of trails and a supportive atmosphere, this event is perfect for seasoned ultrarunners and newcomers alike.

For 2026, the Big Tex Backyard Ultra introduces a new Last Rucker Standing division, offering a shorter course for those looking to enjoy the experience while still testing their endurance. All participants will receive a stylish Big Tex hoodie and a customized poster marking their achievements, while runners who complete 24 yards will earn a coveted 100-mile buckle. Plus, the top finishers will be in for some exciting cash prizes! Join us for a day filled with camaraderie, competition, and unforgettable memories in the heart of Austin's beautiful outdoor landscape.

Organiser's Description

LAST RUNNER STANDING



The Big Tex Backyard Ultra takes place at Stephen F. Austin State Park in San Felipe allowing a large grass area for personal aid setup around our group dining hall screen shelter as well as reserved campsites and full hookup RV sites. The group dining hall area hosts a large grass area for runners to set up personal crew spots (see below information).

The SFA State Park has a network of wide, well-maintained, trails, primarily crushed gravel, with minimal elevation change.



Back for year four, The Big Tex Backyard is a "last runner standing" format event with a 4.17 mile "yard" starting every hour, on the hour, until there is only one remaining. Standard backyard format rules will apply (see below details). 2026 is a Bronze Ticket race to Laz's Big Dog's Backyard road to the 2027 Silver Ticket Races to the 2028 National Championships to the 2029 Backyard World Championships (see the Backyard Ultra site for confirmation on races, qualifying, and other details.



New for 2026, we will have the Last Rucker Standing division coincide with the Last Runner Standing on a shorter course (final distance TBD). Stay tuned for more details. Ruckers will recieve a Big Tex Backyard Ultra patch in addition to the race swag.



All participants will receive a Big Tex hoodie, a special customized poster with their completed yards stamped, and fully stocked aid station support. Runners completing 24 yards will receive a 100mi buckle. The winner of the Last Runner Standing event will win a dollar for every mile they run, and the seconder will win a dollar for every yard they finish!**



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, the last runner standing wins.



Runners and crew will be able to set up a personal area with chairs, tents, etc. around the start/finish course-line area for personal aid, gear, and rest between yards (not during).



We will give a 3-minute, 2-minute, and 1-minute warning to be inside the starting corral for the next yard.



All runners are required to be in the starting corral before the top of the hour.



Failure to line up in the starting corral will result in the disqualification of the runner. Participants must start a new yard at the sound, and continue out on the course (not back to their tent, aid, etc.).



Once you are on the course, you are not allowed any aid from your crew or any other individual. No non-competitors on the course (including eliminated runners). Except for restrooms, competitors may not leave the course until each loop is completed. Runners are responsible for their own aid on the course (carried with them from the start). You must be on and stay on the course unless you need to use the bathroom.



No artificial aids (including trekking poles) are allowed. Once you complete the yard, and assuming you have finished within the hour, you may use the bathroom, eat, drink, sleep, ponder the next yard, aid station, etc., but you MUST be back in the start corral at the beginning of the hour to continue into the next hours yard. Runners will continue until ONE runner completes a FINAL lap. (i.e. If there are two runners left and one does not complete the loop, then the one that completed the loop will be declared the winner). No pacers whatsoever. A single runner can not continue solo beyond the final yard.



You must check out with the race director once you can not complete a yard or decide not to begin the next yard.



**Overall Cash Prize Rules: The overall winner of the Last Runner Standing, per backyard rules, must complete one more yard than everyone else (otherwise there is no winner). Seconder payout will go to the seconder with the fastest completed final lap (if more than one seconder).

Races

  • Last Runner Standing

    Incl. $8.20 Fee & Long Sleeve

    Sat 7th November 2026 (7:00AM CST)

    $128.20

  • Last Rucker Standing

    Incl. $8.20 Fee & Long Sleeve

    Sat 7th November 2026 (7:00AM CST)

    $128.20

    Ruck division on a shorter loop.
  • Lil Tex Kids K

    Incl. Youth Shirt

    Sat 7th November 2026 (12:00PM CST)

    Free

    OPENS 01 OCT
    14 and Under, free park entry and race bib with a finishers ribbon/medal. Does not include a shirt.

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Location

Park Rd 38, San Felipe, 77473, TX, United States

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Nov 7, 2026

Free - $128.20