It really depends on the club, I recently raced at the ROCCK in Knoxville and they do 7 min quals and 7 min mains, most clubs do 5 min quals and 8 min mains, depending on turn out they will do 10 min mains and most big race events will do 10 min mains. Just to clarify I only race 1/8 electric these days as the 1/10 program in my area is non existent.