IZOD IndyCar World Championships
The IZOD IndyCar World Championship Presented by Honda was an IndyCar Series race on the Las Vegas Motor Speedway, held from 1996–2000, and again in 2011. It was first known as the Las Vegas 500k. The Champ Car World Series held a race at the track during the 2004 and 2005 seasons as doubleheaders with the NASCAR Camping World Truck Series and a street race was held in Las Vegas at the Fremont Street Experience in 2007.
International Linguistics Olympiad
IOL 3 was held from August 8 to 12, 2005, in Leiden, Netherlands, with the participation of 13 teams from 9 countries, Finland and Romania for their first time. The five problems at the individual contest were in Tzotzil, Lango, Mansi, Yoruba and Lithuanian. The team problem was in Figuig.