The Tums Fast Relief 500 is a NASCAR Sprint Cup Series stock car race held at the Martinsville Speedway in Martinsville, Virginia. It is currently the sixth race in the ten race Chase for the Sprint Cup. Since 2007, the race has been carried on ABC.

The 1:30 p.m. eastern start time is one of the earliest starts in the Chase. The track does not have permanent lights installed, and shadows cast heavily over the facility in mid-October, when the race has been held since 2001. Most other NASCAR events have set a start time for 2 p.m. or later since 2005.

The Tums sponsorship returns sponsorship to GlaxoSmithKline.

Traditionally, the winner of this race receives a custom-built grandfather clock.

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