Here's a link to a cool video of Ryder Hesjdal trying to break Vaughters reacord up Haleakala. The mountain goes from sea level to just over 10,000 ft in 57k. JV's record was 2hrs 38min in 1993. At the end of the video they give Ryder's stats for the climb and his power numbers. Pretty cool, if you're into that kind of thing.
Ryder Record Attmept Video
Click the HERE for the info from his Garmin during the ride.