An Iditarod sled dog named Leon was found safe after disappearing from a checkpoint in the race three months ago and covering nearly 150 miles, the Iditarod Trail Committee said Saturday. Musher Sebastien Dos Santos Borges of France was picking Leon up and returning with him to France, the trail committee said in a statement. Leon went missing in March after what the trail committee said was his “escape” from the Ruby checkpoint.