sentences:  It has hosted a yearly 6-hour ultramarathon since 2009, a 12-hour ultramarathon since 2010 and a 24-hour ultramarathon since 2011.The Park 10 Grandstand was refurbished by the University of Adelaide in the early 2000s.Due to drought conditions forcing the closure of the Waite Campus sports fields, the Adelaide University Rugby Club was temporarily moved to the Graduate's Oval in Park 10 during May and June 2007.