There were hopes that he was going to be able to compete this winter, but in early November the signs were clear that something was wrong when it came to how his body reacted to the effort. "I was given a plan to gradually increase my training load. And when I was allowed to do everything in training again, my condition deteriorated rapidly within a week. Anything above a heart rate of 100 caused tremendous pain in my leg. We immediately started looking for solutions."
Iserbyt may never get on a bike again
"It's just bad luck. Moreover, surgery on an artery is a very serious procedure. The more you cut an artery, the worse the tissue becomes. And I've had that operation four times". He further details the reason why he has decided to leave professional cycling, as he currently has no other option.
"At the moment, I can only walk. Cycling and running are impossible, and I probably never will be able to do that again because the artery in my left leg is so badly damaged," he reveals. "I think that's a real shame."
Iserbyt won in his final season as a pro, but could've never guessed what lied ahead
The 28-year old has conquered much of what there was in cyclocross, however could never conquer a world title and ultimately had no control over the end of his career. Throughout the entire year of 2025 he found himself in a dark place. "The uncertainty was eating away at me. I stopped sleeping, I shut myself off, and I stopped living. Fortunately, during my career, I've found a team that supports me tremendously. I think that's what's saving me right now."
"My sport had become my life's work. That life is now disappearing, forcing me to find my way again. That's really tough. All I can say is that I put my passion, character, and perseverance into it. That has given me so much, and I'm incredibly grateful for it."
It will take some time before Iserbyt finds his ground once again, potentially in the world of cycling. However being an athlete, or even a coach, seems like a very unlikely scenario.
"Just because the course is gone doesn't mean I no longer have my ambition and character. I believe I can find that in a vision or role. But I think it's still far too early to think about that. First, I want to take stock".