4x1 - Arctic Circle

August 12, 2009

Grylls goes to the Arctic Circle, where he encounters a frozen waterfall, wild reindeer and some of the coldest conditions on the planet.

4x2 - Alabama

August 19, 2009

Grylls wrestles a pig, squeezes through some tight spots, and survives a forest fire in the swamps of Alabama. It is revealed that Grylls broke his shoulder while in Antarctica two months previously.

4x3 - Vietnam

August 26, 2009

Grylls demonstrates what it was like for soldiers who had to survive in the jungles of Vietnam, during the Vietnam War.

4x4 - Texas

September 2, 2009

In Western Texas, Grylls falls to earth from an upturned biplane into the parched Chihuahuan Desert; he traverses deep gorges, locates an oasis and takes on a diamond back rattlesnake.

4x5 - Alaska

September 9, 2009

Grylls returns to the wilderness of Alaska to survive the dangerous terrain of the Last Frontier.

4x6 - Pacific Island

January 6, 2010

Grylls is on a deserted Panamanian island; he creates fresh water and chooses to use tribal fishing techniques before battling the sea on a makeshift raft. Later in the episode he gives himself an enema in order to stay hydrated on the open seas.

4x7 - China

January 13, 2010

Bear does all his usual acrobatics while suffering through Typhon Parma in China including swinging on a vine, monkey climbing over a gorge and cliff diving.

4x9 - Guatemala

January 26, 2010

4x10 - Urban Survivor

February 3, 2010

Grylls is in a post-disaster urban city scenario and he must survive. His thirst to live and survival techniques modified for a city environment keep him alive in a concrete wasteland in Gdynia, Poland.

4x11 - North Africa

February 17, 2010

Grylls crosses the Sahara desert to the North Africa coast, where he catches an octopus, fashions a shelter out of acacia trees and dines on moths and locusts.