The first warning came in 2021 as he prepared to leave for the Tour de France. “I was about to leave for the Tour when I felt a swelling sensation in my stomach. Pain. A feeling I had never experienced. I was immediately worried.”
The verdict was blunt. “Stage three lymphoma. The world fell on me like a boulder.”
Surgery in Milan followed. Chemotherapy and immunotherapy initially appeared successful. By March 2022, he was back at races and believed the worst had passed. “I thought the worst was behind me.”
Instead, the real ordeal was only beginning. “In October 2022, everything collapsed. My immune system was very weakened by the treatments, and infections suddenly piled up. It became an ordeal.”
He remained Covid positive for an extended period and suffered pneumonia seven times. Across a 12 month stretch he spent around 160 days between the San Paolo and San Raffaele hospitals in Milan, much of it in forced isolation. His weight dropped to 58 kilos, and several organs were compromised. “My liver was not functioning properly because of the amount of medication.”
Yet even from isolation, he refused to detach himself from the team he had helped build. “I was there, in my hospital bed, with oxygen, sometimes with a drip in my veins. But I took part in meetings. Even just to distract my mind and not always think about my troubles.”
At the time, Lidl-Trek were not a minor operation treading water. The organisation had entered a new phase, strengthened by Lidl’s deepened involvement beyond simple title sponsorship. The budget sat at around €50 million annually. Staff numbers hovered around 200 across men’s, women’s and development structures, with plans to expand further.
Strategic decisions were shaping what is now one of the sport’s most complete teams. And their general manager was dialling in on oxygen.
From survival to ambition
Guercilena has long been central to Lidl-Trek’s rise. Since stepping into senior leadership in 2013 and remaining at the helm through Trek’s structural takeover in 2014, he has overseen steady progression from respected contender to genuine heavyweight.
By early 2026, Lidl-Trek are firmly among cycling’s top tier. The team collected more than 40 victories in 2025, secured stage wins across all three Grand Tours and field one of the most versatile rosters in the peloton. Juan Ayuso adds Grand Tour leadership depth. Giulio Ciccone remains a proven climber. Jonathan Milan continues to deliver elite sprint results. Mads Pedersen and Mattias Skjelmose offer range across Classics and stage racing.
That upward trajectory makes his sporting ambition logical rather than fanciful. “From a sporting point of view, after World Championships, Olympics, Classics… to win a Giro or a Tour, and to become the number one team in the world.”
But the illness has shifted something deeper. Before the diagnosis, he admits he felt insulated by the sport. “Like many people who work in sport, I felt… invincible, in a way. I saw illness as something distant.”
The experience has recalibrated him. “It taught me to give the right weight to things.”
And perhaps that perspective explains why his ultimate goal is framed in human terms as much as sporting ones. “Perhaps it is even more important that the team becomes a place where everyone who works there comes willingly. With pleasure, with a smile. And knowing they can grow: professionally and as people.”
For Lidl-Trek, 2026 is about chasing Giro and Tour glory and cementing their place among cycling’s superpowers.
For their general manager, it is also about something far more personal. After 160 days in isolation, after moments when he believed he might not survive, building the number one team in the world now carries a different meaning.
The ambition remains. The perspective has changed.