Quick Recovery of Renal Alterations and Inflammatory Activation after a Marathon.

Purpose: We evaluated the incidence of acute kidney injury in a cohort of marathon participants.

Methods: We conducted a prospective observational study focused on evaluating the incidence of kidney damage after a marathon, and its evolution in the first 48 h after the marathon in 88 runners who completed the Valencia Marathon.

Results: From the 88 participants, 42 (48.