Wild fig trees have the longest roots in the world. The individual fig tree that holds the title of longest roots is located in South Africa and has roots 400 feet long.
The fig tree sits near the Echo Caves in Ohrigstad. Although this tree has the longest roots, it is not the tree with the largest girth in the world. That honor goes to an eastern chestnut tree that dates back to the 18th century. This tree, located on Mount Etna in Italy, has a width of 190 feet. The largest tree in the world, meanwhile, is a sequoia located in Sequoia National Park. It stands 275 feet tall.