Hey race fans, welcome back to Driving on Marbles! Happy Wednesday and welcome to race week at one of my absolute favourite stops on the entire NASCAR schedule.

The Cup Series is heading to Martinsville Speedway this Sunday for the Cook Out 400 and honestly I couldn’t be more excited about this one. Martinsville is a completely different animal from anything we’ve seen so far in 2026. We’ve had superspeedways, road courses, a flat one-mile oval, a 1.5-mile intermediate, and last week the unique challenge of Darlington. But nothing on this schedule prepares you for what Sunday is going to feel like at the paperclip.

Martinsville is a 0.526-mile half-mile oval that is absolutely brutal on brakes and tires. The straights are only 800 feet long. Drivers are nose-diving into these turns, braking as hard as they can, and then slamming on the throttle coming out of Turns 2 and 4 to get back to as much speed as the straights will allow before doing it all over again.

Four hundred laps of that. It’s a grind and it’s glorious and the winner gets a grandfather clock instead of a trophy because Martinsville does things its own way.

The big storyline heading in is whether Tyler Reddick can make it five wins from seven races or whether the field finally figures out how to stop him. Interestingly, Reddick is not the favourite this week. Ryan Blaney and Denny Hamlin are the early market leaders heading into Sunday. There’s a reason for that and we’ll get into it below.

Green flag drops at 3:30 PM ET this Sunday March 29. Here’s your full top 20 breakdown based on the current Cup Series standings.

Let’s get into it!