Why Does Everyone Dread The ValleyStar 300 Heat Races At Martinsville Speedway?
![null](https://d2779tscntxxsw.cloudfront.net/6510524c1a4db.png?width=400&quality=80)
The four 25-lap heat races are the most stressful part of the ValleyStar Credit Union 300 at Martinsville Speedway for every competitor.
The four 25-lap heat races are the most stressful part of the ValleyStar Credit Union 300 at Martinsville Speedway for every competitor.