A superhuman feat by a Pole! 50x IRONMAN – first in the world. Jurand Czabański

Jurand used this strategy throughout the run and bike. He would wake at 4:00 AM, start immediately, and not eat breakfast until he had covered a set distance. The promise of a specific food (like açaí, which he loved) became a mental anchor. He would accelerate to earn more time for a short nap. He also divided the 1 km loop into mental checkpoints: the first turn, the team area, the lake, the second checkpoint. This prevented him from being overwhelmed by the total distance. The approach is essentially a behavioral hack to manipulate the brain's reward system when the body is depleted.

Jurand underwent a sleep study that revealed he achieves about 3 hours of deep sleep in a 5-hour window, while the average person gets only 1 hour of deep sleep in 7–8 hours of sleep. This biological quirk meant that even his 2–2.5 hour naps could include a significant portion of deep sleep, providing disproportionately high recovery. He also notes that he has never been a 'sleepy' person, always waking early and disliking long sleep. During the event, he would fall asleep instantly—once even while cycling—and the team would wake him after exactly the allotted time. He attributes his survival largely to this efficiency, though he acknowledges that he still looked like an old man and lost 12 kg.

On the last Tuesday, when everyone told him it was the final Tuesday, he began fantasizing about his armchair, coffee, family time, and the end of the suffering. That fantasy caused his adrenaline to plummet, and he suffered his worst day—crying all day, collapsing multiple times, and wanting to quit. He realized that he had let his mind go too far ahead. From then on, he forcibly stopped himself from thinking about the finish, focusing only on the next step and the next lap. He stopped talking to people, stared at his feet, and repeated 'krok za krokiem' to block out the long-term view. This tactic pulled him out of the crisis and carried him to the finish line.

Jurand entered the unknown. No one had ever done a continuous 50x, so there was no precedent for pacing, nutrition, or recovery. He feared that his legs would eventually refuse to work, that micro-injuries would accumulate into massive tears, and that he would be forced to stop. Instead, his body never truly failed him. The biggest shock was how well he held up physically—he didn't even have muscle soreness, and he felt he could have kept going. The mental strain, however, was immense: he hallucinated, lost consciousness multiple times, and cried for a full day when his mind turned toward the finish too early. He describes the challenge as no longer a sport but an experiment on the limits of human nature.

Jurand describes how a major clothing brand and another company withdrew their support, stating they did not want to be associated with the sport's damaged image. He points out that while Karaś is the face of the sport, the rest of the athletes are unknown and thus suffer by association. To counter this, he voluntarily submitted to anti-doping tests for his 50x attempt, even though the Guinness record didn't require it. The official International Ultra Triathlon Association does require them for an official record, but he also did it preemptively to show that other athletes have nothing to hide. This decision was both a practical move to legitimize his record and a moral stance against collective guilt.

In the day-by-day format, an athlete might swim 3.8 km, bike 180 km, and run 42 km in about 12 hours, then rest for 12 hours, with physiotherapy, full meals, and sleep. The next day, they repeat, but the muscle groups are rotated. In the continuous format, Jurand swam 190 km first (over 110 hours), then cycled 9,000 km (22 days), then ran 2,110 km (3 weeks). This means the same muscle groups—shoulders during swimming, then legs and lower back during cycling, then legs during running—are loaded day after day with no rotation. The cumulative micro-trauma never gets a chance to heal because the rest is minimal and the movement pattern is constant. Jurand notes that this drastically increases the risk of muscle tears, overuse injuries, and systemic breakdown. He believes this is why no other ultra-athlete wanted to join him: the time limit of 55 days was too tight for anyone else to survive the continuous load.