This coming Saturday, former contestants from the reality competition series “Survivor” will race up thousands of staircases at Soldier Field for several charities of Illinois, such as Ann & Robert H. Lurie Children’s Hospital of Chicago and the Illinois Fire Safety Alliance.

For those unfamiliar with the series, “Survivor” is a thirty-nine day competition where sixteen to twenty people form two tribes and compete in an isolated land over the course for thirty-nine days for a chance to win $1 million. Players must learn to adapt to the elements or they are voted out of their tribe. “Survivor” has been a long-running series for over twelve years and heading into its twenty-fifth season this Wednesday, which is set in the Philippines.

This event involves several teams with two former Survivor contestants as captains. Every participant will attempt to scale the stadium with either a three thousand or six thousand stair climb. Registration to participate in this event has officially been closed, but registering as a spectator is open until Sept. 21.

The following team match-ups along their respective seasons are as follows: Kat (One World) & Erinn (Tocantins,) Mookie (Fiji) & Jenny (Cook Islands), Mallory Ervin (“The Amazing Race”) & Kelly S. (Nicaragua), Kim (Palau) & Sabrina (One World), Jay (One World) & Matt (One World), and Krista (Redemption Island) & Stephanie (Redemption Island). Winner of “Survivor: Vanuatu” Chris Daugherty will be the host of this event.

A spectator fee of $20 will be charged online at www.stormthestadium.comand those interested must register by Sept.21.