 Single car qualifying has been used for most of the sport's history other than a five-year span between 2014 and early 2019 where a knockout system similar to Formula One was used.NASCAR returned to single-car qualifying at ovals in all three national series in May 2019 at the Dover spring race.At ovals longer than 1.25 miles (tracks longer than Darlington), the starting line up will be determined by a single timed lap.