Mt. Whitney, California Standing tall at 14,491 feet, Mt. Whitney is the tallest peak in the lower 48 There are some spectacular sites on the trail to the top of Whitney. The trail here is perched on a narrow rock ledge, but that doesn't phase this team, onward! Beware of ferocious carnivores! Not really, just a marmot watching the hikers from the rocks. Early morning sunshine on the Sierra's means that it is time to awake and head for the summit! Pietro and friends made the summit on a picture perfect day. Another small step towards the summit of Mt. Kilimanjaro, and another victory for Colorado Cancer research.