I've only done 3. First time was in June 2008 at the end of doing the High Sierra Trail.
Second time was on day 11 of my 2009 summer hike and I came up from Whitney Portal.
My failed attempt was in September 2009 when I did the High Sierra Trail in 4 days and I didn't have enough time to bag the summit and get down to my ride in time.
I don't think I will plan to do Whitney again though since there are so many peaks with nicer views and allot less people!
