Tia-Clair Toomey is the reigning Fittest Woman on Earth. Katrin Davidsdottir has two CrossFit Games championships under her belt. Both women are fierce, determined and fitter than ever.

In this episode of “Road to the Games,” we follow Toomey and Davidsdottir as they prepare to take on the 2018 Reebok CrossFit Games, which are less than a week away. Both women have been training at the very edge of capacity in hopes of being crowned the Fittest on Earth on Sunday, Aug. 5.

“I want to be as fit as I can, and I want to be as strong as I can,” Toomey says. “In order to do that, I need to test my boundaries.”

Toomey is doing just that while training in Cookeville, Tennessee, under the watchful eye of husband and coach Shane Orr.

Meanwhile, in Boston, Massachusetts, Davidsdottir is tackling the famous Blue Hills with coach Ben Bergeron and a handful of Games athletes including Camille Leblanc-Bazinet and Brooke Wells.

“Whenever something is really, really, really, really hard, in like a lactic, sprint kinda way, that’s when I’m like, ‘Ooo, that was almost like Blue Hills,’” Davidsdottir says of the workout.

Toomey and Davidsdottir will battle each other and the rest of the field Aug. 1-5 at the Alliant Energy Center in Madison, Wisconsin.

Get tickets to the 2018 Reebok CrossFit Games here.