When Marcelo is not with his family, teaching, doing research, or writing, he is out running the mountain trails of northern New England. He is an avid ultramarathoner, in particular of trail races on difficult mountainous terrain.
Marcelo sees a lot in common in pushing the limits of body and mind: Both take courage, endurance, and persistence. In his view, obstacles are triggers, not barriers. He takes inspiration from Dylan Thomas: Rage, rage against the dying of the light.
Whenever he can, Marcelo goes back to his native Rio to be with old friends and family. No matter what, he takes a dive at Ipanema beach.