Last year's champion, Erik Miller defends his title. While 2nd place finisher, Jason Scherer, will be one of the many top challengers aiming to beat him.

We follow Shannon Campbell, the first 3-time champion of the King of the Hammers. But his kids, also young drivers, push their dad to the brink of his limits.

It's mud, sweat, and gears as drivers battle it out in the toughest Ultra 4 race yet.

It's all or nothing as underdog Tom Liu drives himself to the brink in a heart-stopping Ultra 4 race.

Team Indiana, the underdogs of Ultra 4, take the fight to the enemy.

Handsome Jay Callaway's racing career is on the line in one of the toughest technical East Coast race of the series.

Wayland Campbell and Levi Shirley go head to head leading to the championship but there is an outsider Randy Slawson, 2 time champion to never under-estimate.

Leaders Wayland Campbell and Levi Shirley push each other to their limits while other top drivers show just how fast 4x4 off road racing has become.