Barkeley, Schmarkely: Before that, this guy came out of nowhere and did the JMT - unsupported - faster, by a lot, than any previous known time:
"Maune travelled unsupported from Whitney Portal to Yosemite in 3d 14h 13m (3d 9h 58m from Whitney Summit), beating Sue Johnston's overall (supported) record by 5h 47m, and beating Michael Popov's unsupported record by over 19 hours!"
And, oh: I believe those previous records were for the JMT proper: between HI and Whitney Summit; Brett's time included the MWMT.
The class 5 move doesn't surprise me in the least: if that was the fastest route, how else would you go? The math says he did the final 400 and the summit plateau in 6:54. That's minutes, folks.
Kidding about Barkeley, of course; considering the number of people who have even finished it, the B to B is stunning.
Welcome to the site, Brett. Did someone mention the Sierra Challenge?
Wherever you go, there you are. SPOTMe!