Oldest person to cross the Grand Canyon rim-to-rim on foot (male)

Ernest made the crossing accompanied by a small group of companions; Eric Arlington, Patricia "Patsy" Hughes, Richard Hughes, Tim Powell, and Jeri Segal, hiking down the North Kaibab Trail to the canyon floor before resting at Bright Angel Campground and climbing out via the Bright Angel Trail to the South Rim, a route covering nearly 21 miles with over 10,000 feet of combined elevation change.