world longest tree
So with that out of the way, the world's longest tree is a Coast Redwood located in Montgomery State Reserve, CA. named the Mendocino Tree. The Mendocino Tree measures in at 367.5 feet with a diameter of 10 feet 4 inches and is estimated to be about 1,000 years old. The Mendocino Tree captured the record after the existing world's longest tree, located in the Redwood National Park, CA., lost 10 feet of it's top in a storm. UPDATE: November17, 2008.