Season 4 (2009–2010)

№	#	Title	Directed by	Survival expert(s)	Original air date
39	1	"Arctic Circle" "Norway"	Andrew Barron	Andrew Wood	August 12, 2009 (2009-08-12)
Grylls goes to the Arctic Circle, where he encounters a frozen waterfall, wild reindeer and some of the coldest conditions on the planet.
40	2	"Alabama"	Nick White	Stani Groeneweg	August 19, 2009 (2009-08-19)
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.
41	3	"Vietnam"	Sid Bennett	Andrew Wood	August 26, 2009 (2009-08-26)
Grylls demonstrates what it was like for soldiers who had to survive in the jungles of Vietnam, during the Vietnam War.
42	4	"Texas" "Texas Desert"	Stephen Shearman	Stani Groeneweg	September 2, 2009 (2009-09-02)
In Western Texas, Grylls falls to earth from an upturned bi-plane into the parched Chihuahuan Desert; he traverses deep gorges, locates an oasis and takes on a diamond back rattlesnake.
43	5	"Alaska"	Nick White	Ross Bowyer	September 9, 2009 (2009-09-09)
Grylls returns to the wilderness of Alaska to survive the dangerous terrain of the Last Frontier.
44	6	"Pacific Island" "Panama"	Stephen Shearman	Ross Bowyer	January 6, 2010 (2010-01-06)
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.
45	7	"China"	Graham Strong	Andrew Wood	January 13, 2010 (2010-01-13)
In Southern China Grylls arrives in the aftermath of a tropical typhoon. He tackles swollen rivers, scales slippery limestone faces, avoids disaster with stinging ants, and utilizes ancient tribal techniques to catch bats for food.
46	8	"Big Sky Country" "Montana"	Konrad Begg	Stani Groeneweg	January 20, 2010 (2010-01-20)
Grylls takes on Big Sky Country. He paraglides above the Rockies, traverses vast gullies, and makes the most of abandoned debris before making his great escape on a moving train.
47	9	"Guatemala"	Alexis Girardet	Ross Bowyer	January 27, 2010 (2010-01-27)
Grylls rappels onto a live volcano in Guatemala, navigates a waterfall in an underground cave, creates a nest to safely sleep in but gets an unwelcome bed buddy, and encounters ancient Mayan ruins.
48	10	"Urban Survivor" "Poland"	Nick White	Andrew Wood	February 3, 2010 (2010-02-03)
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.
49	11	"North Africa" "Morocco"	Nick Fletcher	Ross Bowyer	February 17, 2010 (2010-02-17)
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.