Logo for: National Kidney Registry


Matt Cavanaugh, PhD, an active duty US Army Strategist, donated his left kidney to a stranger on September 15, 2021. In 2022, the National Kidney Registry is sponsoring his attempt to be the first living kidney donor to finish the full 4 Deserts race series—racing 1,000 kilometers across Namibia, Georgia, Chile and Antarctica. In his 1K4D (1 Kidney, 4 Deserts) blog, he posts weekly dispatches on the training and competition.

Watch a video about Matt or learn more at 1K4D.org.