http://www.desertusa.com/mag98/sep/stories/whitney.html
0.0 miles: Trailhead (8,360 feet)
0.85 miles: Enter John Muir Wilderness (permit required beyond)
2.7 miles: Cross Lone Pine Creek. Shortly after crossing, trail forks to Lone Pine Lake on left, right continues towards summit. (9,980 feet)
3.8 miles: Outpost Camp with Thor Peak dominating the view. (10,360 feet)
4.3 miles: Mirror Lake (10,640 feet)
4.9 miles: 50 yards past Whitebark Stump, a dwarf whitebark pine is the last tree on trail
5.3 miles: Trailside Meadow (11,395 feet)
6.3 miles: Trail Camp, a good place to rest before the grueling 96 switchbacks to Trail Crest. (12,039 feet)
8.5 miles: Cross Trail Crest and enter Sequoia National Park. (13,777 feet)
9.0 miles: John Muir Trail joins from the west. Altitude sickness common. (13,480 feet )
9.3 miles: Cutoff to Mount Muir.
10.5 miles: Keeler Needle, just a short climb to the summit from here. (14,003 feet)
11.0 miles: Mt. Whitney summit. No water. Camping permitted. (14, 495 feet)
Weather Forecast: http://forecast.weather.gov/MapClick.php?lat=36.61&lon=-118.28&site=hnx&smap=1&marine=0&unit=0&lg=en
June 6 Report: http://www.mitbbs.com/article_t/Outdoors/31287139.html
Whitney Portal forum: http://www.whitneyportalstore.com/forum/ubbthreads.php/ubb/postlist/Board/1
The attached "whitney.gpx" can be opened in Google Earth.
Since the switchback is covered by snow, I bought an Ice Axe and STABILicers from local REI store.