The Journey Begins
Episode: 4x01 | Airdate: Feb 1, 2009
Episodes
The Moment Of Truth
Episode: 4x02 | Airdate: Feb 2, 2009
Chicken or the egg?
Episode: 4x03 | Airdate: Feb 3, 2009
The Games Begin...
Episode: 4x04 | Airdate: Feb 4, 2009
Double or Nothing bracelets
Episode: 4x05 | Airdate: Feb 5, 2009
Bucket Loads of Trouble
Episode: 4x06 | Airdate: Feb 6, 2009
Weigh-in #1
Episode: 4x07 | Airdate: Feb 8, 2009
Sisters v Newlyweds
Episode: 4x08 | Airdate: Feb 9, 2009
Race to Sydney
Episode: 4x09 | Airdate: Feb 10, 2009
Welcome to Camp Biggest Loser
Episode: 4x10 | Airdate: Feb 11, 2009
Double Vote
Episode: 4x11 | Airdate: Feb 12, 2009
Running and Thinking
Episode: 4x12 | Airdate: Feb 13, 2009
Weigh in #2
Episode: 4x13 | Airdate: Feb 15, 2009
Mothers vs. Mother/Daughter
Episode: 4x14 | Airdate: Feb 16, 2009
Nocturnal Raid
Episode: 4x15 | Airdate: Feb 17, 2009
Wooden Spoon
Episode: 4x16 | Airdate: Feb 18, 2009
Bracelet swap
Episode: 4x17 | Airdate: Feb 19, 2009
Struggle in the Sand Dunes
Episode: 4x18 | Airdate: Feb 20, 2009
Weigh-in #3
Episode: 4x19 | Airdate: Feb 22, 2009
Husband & Wife vs. Sisters
Episode: 4x20 | Airdate: Feb 23, 2009
Elimination with a twist
Episode: 4x21 | Airdate: Feb 24, 2009
Italian temptation
Episode: 4x22 | Airdate: Feb 25, 2009
Cage of pain
Episode: 4x23 | Airdate: Feb 26, 2009
A waterlogged challenge
Episode: 4x24 | Airdate: Feb 27, 2009
Weigh in #4
Episode: 4x25 | Airdate: Mar 1, 2009
The Brothers Decide
Episode: 4x26 | Airdate: Mar 2, 2009
Raw or Straw
Episode: 4x27 | Airdate: Mar 3, 2009
Milkshake Wars
Episode: 4x28 | Airdate: Mar 4, 2009
A White Surprise
Episode: 4x29 | Airdate: Mar 5, 2009
Towers of Tuna
Episode: 4x30 | Airdate: Mar 6, 2009
Mel and Holly's Confession
Episode: 4x31 | Airdate: Mar 8, 2009
A Strange Elimination
Episode: 4x32 | Airdate: Mar 9, 2009
Cameron's Bike Phobia
Episode: 4x33 | Airdate: Mar 10, 2009
A Chocoholic's Nightmare
Episode: 4x34 | Airdate: Mar 11, 2009
The Big Split
Episode: 4x35 | Airdate: Mar 12, 2009
And They're Off!
Episode: 4x36 | Airdate: Mar 13, 2009
Solo Scales
Episode: 4x37 | Airdate: Mar 15, 2009
Amanda Sees Red
Episode: 4x38 | Airdate: Mar 16, 2009
Emazon Returns
Episode: 4x39 | Airdate: Mar 17, 2009
A Familiar Temptation
Episode: 4x40 | Airdate: Mar 18, 2009
Sharif's Big Decision
Episode: 4x41 | Airdate: Mar 19, 2009
Battle of Brains and Brawn
Episode: 4x42 | Airdate: Mar 20, 2009
Bob Does It Again
Episode: 4x43 | Airdate: Mar 22, 2009
A Surprise for Nathan
Episode: 4x44 | Airdate: Mar 23, 2009
Enter the Castaways
Episode: 4x45 | Airdate: Mar 24, 2009
Sharif's Good Fortune
Episode: 4x46 | Airdate: Mar 25, 2009
Surprise Swap
Episode: 4x47 | Airdate: Mar 26, 2009
Mud Bath
Episode: 4x48 | Airdate: Mar 27, 2009
Cameron's Triumph
Episode: 4x49 | Airdate: Mar 29, 2009
Teresa Says Farewell
Episode: 4x50 | Airdate: Mar 30, 2009
Time to Go Solo
Episode: 4x51 | Airdate: Mar 31, 2009
Makeover Magic
Episode: 4x52 | Airdate: Apr 1, 2009
Elimination Shock
Episode: 4x53 | Airdate: Apr 2, 2009
A Painful Challenge
Episode: 4x54 | Airdate: Apr 3, 2009
The Return Of The Yellow Line
Episode: 4x55 | Airdate: Apr 5, 2009
A Difficult Choice
Episode: 4x56 | Airdate: Apr 6, 2009
Back to the Future
Episode: 4x57 | Airdate: Apr 7, 2009
Face the Fears: Sammy, Sean and Cameron
Episode: 4x58 | Airdate: Apr 8, 2009
Face the Fears: Tiffany, Meaghan and Julie
Episode: 4x59 | Airdate: Apr 9, 2009
The Challenge: Super Challenge
Episode: 4x60 | Airdate: Apr 10, 2009
The Weigh-In #10
Episode: 4x61 | Airdate: Apr 12, 2009
Sean vs. Cameron: Sean
Episode: 4x62 | Airdate: Apr 13, 2009
Eliminated Contestants Return
Episode: 4x63 | Airdate: Apr 14, 2009
Table of Presents
Episode: 4x64 | Airdate: Apr 15, 2009
Battle Of Strength
Episode: 4x65 | Airdate: Apr 16, 2009
Escape From Cockatoo Island
Episode: 4x66 | Airdate: Apr 17, 2009
Wildcard Weigh-in
Episode: 4x67 | Airdate: Apr 19, 2009
Elimination #11
Episode: 4x68 | Airdate: Apr 20, 2009
Payback
Episode: 4x69 | Airdate: Apr 21, 2009
Final Challenge:Removalists
Episode: 4x70 | Airdate: Apr 22, 2009
The Walk
Episode: 4x71 | Airdate: Apr 23, 2009
Bio-Age recalculations
Episode: 4x72 | Airdate: Apr 24, 2009
Cameron's sacrifice
Episode: 4x73 | Airdate: Apr 26, 2009
Bob claims his place
Episode: 4x74 | Airdate: Apr 27, 2009
Finale
Episode: 4x75 | Airdate: Apr 27, 2009