From any angle, whether you’ve been there once or 20 times, Darlington Raceway is a challenge.

The racing line is narrow, the asphalt aged and the chassis set-up that works well in one set of turns is a compromise – at best – in the other.

Competitors in Saturday’s 63rd Bojangles’ Southern 500 will be racing at speeds of more than 180 mph on a track where the pole speed was 85 mph for 1950’s inaugural event.