Oregon Public Broadcasting (OPB) is re-broadcasting an earlier show on the 1959 "through-ride" of an WA couple:
"In 1959 Washington ranchers Don and June Mulford decided to try what everybody said couldn't be done -- ride the entire length of the 2,400 mile Pacific Crest Trail from Mexico to Canada in one year. It would prove to be the adventure of a lifetime. Armed with a movie and slide camera they documented life on the trail and captured surprises along the way. A Ride to Remember showcases their stunning photography and will delight viewers with memories still fresh after fifty years."
Here's a link to the show's main page:
And a link to the page with a short interview with June Mulford:
edit: oops, they were from WA, not OR.