Have you ever stopped to think how far the human body can really go? Marathons, Ironman, 100 km races… and still, some people think that’s not enough. When we talk about ultra distances, we’re not just talking about stamina, we’re talking about resilience, self-awareness, and the mental capacity to endure discomfort for hours, sometimes even for days. And at the end of this text, here’s a little spoiler: Z2 is bringing to Brazil one of the most challenging and fascinating race formats in the world, the Last Man Standing, where literally the winner is the one who can stay on their feet the longest.
Humans were built to endure. There’s a scientific theory called the Endurance Running Hypothesis, which proposes that our species evolved to run long distances under the sun, hunting by persistence. While other animals must stop to regulate their temperature, we sweat efficiently, have elastic tendons, and a body structure designed to absorb impact and return energy effectively. Studies show that, metabolically, the human body can sustain continuous movement for hours, switching between glycogen and fat as energy sources. When glycogen runs out, the fat system keeps the engine running, and that’s when the real “ultra” begins.
But it’s not just about the body. Research in sports psychology shows that ultramarathoners share one key trait: a huge tolerance for discomfort. They train their minds as much as their bodies. A study published in the Journal of Applied Sport Psychology showed that athletes who practice positive self-talk and mindfulness during long events can reduce their perceived exertion by up to 15%. In other words, those who master their mind, master the distance. What separates a 10K runner from an ultramarathoner isn’t just VO₂max, it’s the ability to keep going when the body has already said “enough.”
So, what makes someone ready for an ultra? First, a solid endurance base built over years of consistency, not weeks. Then, mental resilience and self-awareness, understanding your own signs of thirst, hunger, sleep, and pain. Third, a well-defined nutrition and hydration strategy, because without that, no mind can keep the body standing. And finally, purpose. Most ultramarathoners aren’t running against others; they’re running to find out how far they can go.
It’s exactly from that search that one of the most human and at the same time most insane race formats in the world was born: the Backyard Ultra. Every hour, a new lap. 6.7 km. No cumulative time. If you finish early, you wait. If you’re late, you’re out. The last one standing is the Last Man Standing.
And yes, by the end of the year, Z2 will be right at the heart of this challenge here in Brazil. So start getting your body and mind ready, because maybe the real limit doesn’t even exist.
