A special event will take place at the Grand Canyon Tuesday. Dan Berlin is trying to become the first blind athlete to run across the Grand Canyon and back in one day. The event is called “Rim to Rim to Rim” and Berlin and three guides will start at the South Rim of the Canyon, run down to the Colorado River, across the Canyon floor, up to the North Rim and go back. The runners are raising money for the Blind Institute of Technology and the Foundation Fighting Blindness. For more information on the run or to donate, click here.