Backyard Ultra - Summit Trail Racing

Marble Falls, United States • 22 Nov 2025

Event details

The Backyard Ultra - Summit Trail Racing is a Last Person Standing trail race in Marble Falls, TX, held on November 22, 2025. The event is an officially sanctioned Backyard Ultra and is listed as a 2026 Silver Ticket Race. It was selected as one of seven races in the nation offering an automatic spot on the United States Backyard Ultra National Team in 2026.

Course, format and on-site services

Participants run a repeating loop of 4.1667 miles each hour until one runner remains. The daytime trail lap is 2.08 miles; two laps make one loop. The night loop uses a combination of trail and road. Key rules include returning to the start line within 60 minutes (minimum 14:23 min/mile pace) and no pacers allowed. Organizers give 3, 2, and 1 minute warnings before each loop. Crew access is available at the start/finish; primitive camping and RVs are allowed. Aid at the start/finish includes water, ice, orange-flavored Tailwind, and race snacks. Cost is listed as $150 with a price increase noted on 9/1/25. Visit the organization's website for the most recent information.

Race information

4 mi
4.1667 Miles
Visit the organization's website for the most recent information.
Trail runs nearby

Take in Lake Travis views in Austin at the RRCA 5 Miler Championship Oasis Donut Dash on November 1. Multiple distances and ruck options offer racing for every level plus championship prizes and lakeside festival vibes.

Run the scenic Salmagundi Trail Race in the Texas Hill Country with distances from 5K to 50K along Pedernales River trails. Enjoy live music, local food trucks, and support Austin Sunshine Camps at this championship event.

Join the Dripping Springs Turkey Trail Trot in late November for scenic 1k kids, 5k and 10k trail runs with virtual options. Wear a turkey suit for prizes and raffle fun in this festive post Thanksgiving run.

Run scenic riverbank trails at the Colorado River Run in late November at Turkey Bend Park near Marble Falls and Lago Vista. Multiple distances from 5K to 100 miles offer varied terrain, full aid support and custom finisher medals.

Hit the hills at the Mosaic Trail Race on December 6, 2025 at Indian Mound Ranch near Austin, Texas. Choose distances from 50k down to a youth 1 mile on scenic, technical hill country single track with creek views and rugged ranch terrain.

Take on OUTLAST Austin, a 6 hour trail challenge at Dripping Springs Ranch Park where you repeat a 5K loop each hour in day or night editions. Rack up laps to earn patches, a wooden OUTLAST medal for six laps, plus shirts and local prizes.