Backyard ultramarathons in South America

Technical backyard loop with steady climbing each lap, in a last-runner-standing format shaped by endurance, pacing, and mental resilience.

Women-only Backyard Ultra on a repeating circular loop, hourly laps continuing until one athlete remains; a knockout test of pacing and mental strength.

Last One Standing format in Itupeva: repeated hourly laps under international rules, with elimination for missed cutoff and an on-site camping atmosphere.