Last year 21 people could claim perfect attendance on the grueling, month-long UMP DIRTcar Summernationals series.

And this year? With three more events contested than in 2016, the select group of diehards who attended every race actually swelled to 31. The Hell Tour honor roll features 19 team members (including three women), seven drivers, two officials, two media-types and one vendor. | Slideshow | Complete Summernationals coverage

What follows is our annual review of the hearty souls who MORE