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Enter the Proving Grounds

Episode number: 1

Overview: Twelve brave souls take on their first XL challenge in the Colombian Badlands. Survivalists must battle disease-carrying insects, scorching heat, six-foot caiman and stalking jaguars. In this unprecedented challenge, they must trek 40 miles in 40 days.

The Badlands Bite Back

Episode number: 2

Overview: Adam, Heather and Sam score a protein win, but the trek through Colombia's badlands puts the team at risk; Chris battles a mystery illness; Nathan reveals a secret to his partners; the Proving Grounds send a survivalist home.

Bad Blood in the Badlands

Episode number: 3

Overview: Malorie and Shell set their sights on an elusive caiman while Adam and Heather build a raised platform shelter to save Sam from ant attacks.

A Parasite to Behold

Episode number: 4

Overview: A newly formed tribe quickly works together to stalk and kill a caiman. The pressure to trek 40 miles to extraction pushes two teams to make risky migrations. A survivalist is on the brink when medics discover parasites in their digestive system.

Caiman Killers on the Loose

Episode number: 5

Overview: A massive food win buoys Terra and their whole team. On the heels of a caiman kill, Malorie sets her sights on a bigger prize. Heather is shocked when Adam tells her he has not been sharing food. A scorching migration could end Heather's challenge.

A Camp Divided

Episode number: 6

Overview: Far from extraction, Kaiela leads her team on a punishing trek that puts her challenge at risk.

Big Group Energy

Episode number: 7

Overview: The remaining survivalists join forces; when the group splinters to hunt resources, it leads to a big protein win but creates tension between Lynsey and Terra.

Prove It or Lose It

Episode number: 8

Overview: Facing an unprecedented two-day extraction, the final eight survivalists hunt, fish and trap potential food.