David Horton was the first person to "run" the entire PCT in fully-supported ultrarunner style, which he did in 66d7h16m, from June 4 to August 9, 2005. Horton's massive effort is beautifully documented in a high-quality film called "The Runner". Some excerpts are available on YouTube. Here is what Sports Illustrated on-line wrote about Horton's trip:
On Aug. 9 -- 66 days, 7 hours and 16 minutes after he started at the U.S.- Mexico border--Horton, 55, crossed into Canada, smashing the 2003 PCT record by 17 days. Averaging 40 miles a day, the kinesiology professor from Virginia suffered just two blisters, both on his left foot. His strangest encounter? "I was buzzed and hit by a goshawk," he says. Toughest stretch? "Going out of Yosemite. We ran out of food for 26 1/2 hours. Our crew couldn't find us. I felt like quitting." Most surreal moment? Finishing the trail in the Cascades: "It was a blur. It doesn't seem like it was that long or that hard or that I even did it."