Dean Potter set the fastest known time (FKT) running up and down Half Dome in Yosemite National Park last weekend, Adventure Journal reported Tuesday.
Potter completed his climb and descent in 2 hours, 17 minutes, 52 seconds. His mark was nearly six minutes faster than the previous record of 2:23:51, which Kyle Williams set in September 2014. During his record-setting effort, Potter carried no food or water and wore only shorts, socks, and shoes, according to Adventure Journal.
Potter has made headlines in the past for other stunts, including his controversial wingsuit flight with his dog and his controversial May 2006 climb of Delicate Arch in Arches National Park.