The Subway Fresh Fit 500 is a NASCAR Sprint Cup Series stock car race held annually at Phoenix International Raceway in Avondale, Arizona. The race, a 312 lap event that actually is one of only three NASCAR series events measured in kilometers rather than miles or laps, the 502 kilometres (312 mi) race starts during sunset and finishes under the speedway's lights during night time.

Introduced in 2005 as part of NASCAR's realignment program the Subway Fresh Fit 500 held its first inaugural race on April 23, 2005. The "Subway Fresh Fit" name distinguishes this race from another race formerly sponsored by Subway, the Subway 500 (now known as the TUMS QuikPak 500) held in October at Martinsville Speedway.

The 2007 Subway Fresh Fit 500 marked the first time the Car of Tomorrow had raced at Phoenix International Raceway. It also marked Jeff Gordon's 76th career win, tying him with the late Dale Earnhardt, Sr. on the all-time Sprint Cup Series win list. Gordon celebrated the achievement by flying the #3 flag during his victory lap.