If weather is not looking good, the White Mountains are a better bet for better weather than Mt Whitney.

The route to Iceberg is not a "trail." However, if you know the route, the Ebersbacher Ledges are the toughest part. It is less than 3 miles in a direct line from Whitney Portal. If you're turning around at Iceberg, the hike may be quicker than White Mountain due to the shorter distance (twice the elevation, half the distance.)

Here's a link to Bob R's map: http://farm4.static.flickr.com/3148/2767178079_88c4a9f553_o.jpg

Mountaineers Route info links within...