On September 22 and 23, 2022, an online Workshop entitled Fatigue of Plain and Fiber-Reinforced Concrete will be held, organized by the International Doctoral School of the University of Castilla-La Mancha (UCLM) and the Spanish Society of Theoretical and Applied Mechanics (SEMTA). Leading researchers will participate in said Workshop and will present the current state and the advances made in the fatigue behavior of concrete with and without fiber reinforcement.