← All races
Trail

Summit Backyard Ultra

📅 November 21, 2026📍 Marble Falls · United States

Available distances

0 mi

About

Summit Backyard Ultra takes place in Marble Falls, Texas, on November 21, 2026, on trails. The event, named Summit Last Person Standing, starts at 7:00 a.m. and follows the backyard ultra format: runners complete the same loop every hour, on the hour, and the race continues until only one person is still able to start the next loop. There is no fixed finish distance, so how far you go depends entirely on how long you last.

This format rewards patience more than speed. Each loop needs to be finished with enough margin to eat, drink and rest before the next start, which means running well below your usual trail pace. It suits ultrarunners who want to test their endurance without committing to a set distance, as well as first-time ultra entrants who like the idea of stopping whenever they choose. Prepare with back-to-back long runs on trails, practice eating on the move, and get used to running through the afternoon and evening hours.

D-74

Prepare for Summit Backyard Ultra with RunRun

An AI-generated training plan, adjusted every week based on your real sessions. Built around your goal, current level and race date.

  • Personalized plan based on your VO2max, history and weekly availability
  • Strava and Garmin sync: your sessions are analyzed and the plan adapts
  • Target paces, long runs, key sessions: everything is calculated for race day
Create my free plan No credit card. Sign up in 30 seconds.

Races nearby

Other upcoming races around Marble Falls.