The 35th Annual Optima Batteries Dirt Track World Championship Presented by NAPA Auto Parts is set for Oct. 16-17 at Portsmouth (Ohio) Raceway Park. The Lucas Oil Late Model Dirt Series event will have a new format.

This year’s record setting, $100,000-to-win event will feature the popular passing points format. Drivers will compete in two rounds of qualifying heat races, with the passing points total from both rounds determining the B-Main and Feature line-ups.

The activities will get underway on Thursday, October 15, with preliminary events for the Modified division. On Friday, October 16, the Lucas Oil Late Model Dirt Series will take to the track for Hot Laps and two rounds of qualifying Heat Races. Saturday night’s program will include: Late Model B-Mains, the $4000-to-win Modified feature, the $3000-to-win DirtonDirt.com Jim Dunn Memorial Non-Qualifier race, and the 100-lap, $100,000-to-win Dirt Track World Championship main event.