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Marathon is a long distance running race with an official distance of 42, 195 kilometers, running marathon can harm your kidney.
Kidney may not be able to filter waste during marathon as s result of reduction in blood flow to the kidney during the race.
Dehydration during the race can cause increase in temperature, the body temperature can rise to 104f during the race, the heat stress can damage the kidney.
Waste product like creatinine in the blood and protein in the urine are the common kidney injury experienced by those involved in marathon.
Marathon related kidney damage may be caused by rise in runners body temperature and dehydration which prevents blood flow to kidney. This last for two days because the kidney will recover after the marathon.