Complex sentence: Since 2008, the Rodeo-X Endurocross competition is on Thursday instead of the elite class, and the 2-cylinder machines start in the normal "Iron Road Prologue" in class "Desert Bomber".
Split into simpler sentences: Since 2008, the Rodeo-X Endurocross competition, instead of the elite class, has been held on Thursday. The 2-cylinder machines start in the normal "Iron Road Prologue" in class "Desert Bomber".