LU had about 50,000 at their graduation (Trump speaker). They had separate degree ceremonies either day before or after the big event. Also lasted about 1.5 hours.
http://www.newsadvance.com/news/local/trump-address-liberty-university-graduation-draw-to-campus/article_52d226d2-37c1-11e7-8b39-f7e9c4394fc4.html