Jonathan Guisolan

Jonathan Guisolan is a Swiss-Brazilian ultracycling athlete and triathlete competing across some of endurance sport’s most demanding formats. His recent highlights include third place at IRONMAN 70.3 Brasília, where he secured qualification for the IRONMAN 70.3 World Championship in Nice, and eighth place at IRONMAN Brazil. Beyond triathlon, Jonathan is the six-hour cycling world record holder and is preparing for another record attempt alongside his summer racing calendar. A dedicated VivaChek user, he incorporates lactate testing into his training to better understand intensity, manage recovery and prepare with greater precision for both long-distance racing and record-level efforts.