The Pennzoil 400 presented by Jiffy Lube is a NASCAR Cup Series stock car race held annually at Las Vegas Motor Speedway in Las Vegas, Nevada. It is the first of two races at Las Vegas with the other one being the South Point 400 in the playoffs. The inaugural race was held in 1998. For several years, the race was sponsored by United Auto Workers and DaimlerChrysler. From its inception, the race was run at a distance of 400 miles except 2009, which was 427 miles. The extra 27 miles in the 2009 race were added by the sponsors Carroll Shelby International.
The race is unique in that its winner receives a championship belt rather than a trophy. The race was also part of the No Bull 5 challenge from 1999 to 2002.
From 2001 until 2008, this race carried sponsorship from Chrysler.
