NASCAR moved the Southern 500 back to Labor Day weekend in 2015 at "The Track Too Tough To Tame."Sunday's Cup race is 400 miles with Brad Keselowski as the defending winner.Justin Allgaier is the defending winner of Satuday's 200-mile Xfinity race.

April in South Carolina means NASCAR competition, as the Xfinity and Cup Series return for the first of two races during the 2025 season. Here are four things to know headed into race weekend. First,

Darlington has been kind to the team. Rick Hendrick's group has tallied 16 wins, two of which have come from the current crop of drivers. That's the most victories at the 1.366-mile, egg-shaped oval of any organization in the sport.