As of July 2026, The Biggest Loser Season 6 aired in 2008 with 14 episodes — streaming now on Amazon Prime Video. Full episode guide and where to watch below.
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The Biggest Loser Season 6

2008 14 Episodes Reality ⭐ 5/10

The Biggest Loser Season 6 is currently streaming on and , and it delivers exactly the kind of format-driven drama that keeps people talking. Across 1 season, the show has had time to find its rhythm and keep it. A 5/10 rating says what the writing already makes obvious: this one works. Bob Harper is a big part of why it works, but the format itself is the real star. There is no real reason to keep putting it off.

There is a reason The Biggest Loser Season 6 keeps coming up in conversation. The production behind The Biggest Loser Season 6 knows exactly which moments to let breathe. The Biggest Loser: Families is the sixth season of the NBC reality television series The Biggest Loser. The sixth season premiered on September 16, 2008, featuring Alison Sweeney as the host and Bob Harper and Jillian Michaels as the contestants' trainers. The cast was revealed on August 29, 2008. Bob Harper and Alison Sweeney lead a cast that brings real weight to the material. It was aired in 2008. The format has been replicated endlessly since The Biggest Loser Season 6 first appeared, which is its own form of tribute. It knows exactly what it is, and does not try to be anything else.

Reality sceptics are warned — The Biggest Loser Season 6 has converted more than a few doubters. It has built its own audience without needing a direct comparison. It is a manageable watch, easy to fit into a single week. The casting and production never let it go stale. The kind of thing that disappears an evening without you noticing.

📡 Where to Watch The Biggest Loser Season 6

🇦🇺 Australia
🇺🇸 United States
🇬🇧 United Kingdom
🇨🇦 Canada
🇳🇿 New Zealand
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🎬 The Biggest Loser Season 6 — Episode Guide

E1
Husband-Wife and Parent-Child Teams
2008-09-16
Four husband-and-wife teams and four parent-child teams are chosen to try and lose weight through diet and exercise as they compete for a grand prize of $250,000; the eight teams compete in their first challenge, where the winner receives immunity.
E2
Chef Rocco DiSpirito
2008-09-23
The team that wins the sprint and slide challenge gets a phone call home; chef Rocco DiSpirito teaches the contestants to shop for and make healthy and affordable meals; one team is eliminated.
E3
Grand Canyon
2008-09-30
The contestants go on a trip to the Grand Canyon; a temptation challenge provides the winning team with a more-luxurious trip; the contestants must exercise without a gym or trainers; a medical condition threatens to sideline a contestant.
E4
Toughest Challenge Yet
2008-10-07
While one team's members go home to their loved ones, another team spends 24 hours with a trainer; contestants face a competition that tests their endurance as never before; a group of contestants faces the wrath of the trainer.
E5
Surprising Weigh-In
2008-10-08
Contestants try to convince a trainer that they are committed to their workouts; a contestant talks with a trainer about relationship issues with a family member; one team must send a family member home.
E6
Longest Challenge Ever
2008-10-14
The contestants are literally kept in the dark during a wild baked goods temptation; the contestants compete in the longest challenge in ``Biggest Loser'' history; a contestant tries to decide whether to stay at the ranch or go home.
E7
Unusual Workouts
2008-10-21
The teams are put through the most unusual workouts yet and receives their six week reports by Dr. Huizenga. Then, a challenge on a balance beam rewards the winner with something special from home.
E8
Record-Breaking Weigh-In
2008-10-28
This week, contestants put their food knowledge to the test during a calorie quiz that will give the winning team a dramatic advantage in the challenge. Later, emotions run high when one contestant confronts another on the opposing team before the challenge, which leaves the players soaring to new h...
E9
Week of Surprises
2008-11-11
It's a week of surprises for "The Biggest Losers," and the first is the news from host Alison Sweeney that they'll start competing as individuals now instead of as teams. Then comes the surprise return of all the eliminated contestants, and the revelation that only one gets to return to the game - a...
E10
'80s Week
2008-11-18
This week, contestants travel back in time to the 1980s, dressing the part and doing 80s style workouts and participating in a special 80s-themed challenge. Meanwhile, two players aren't speaking to each other, causing friction in the house and with one team in particular. Then an emotional eliminat...
E11
Thanksgiving week
2008-11-25
It's Thanksgiving week at the Biggest Loser ranch, and contestants will be celebrating with turkey, football and very special guests! First, NFL Super Bowl MVPs Jerry Rice and Steve Young stop by to put the contestants through NFL-style drills. Then celebrity chef Rocco DiSpirito helps the contestan...
E12
Makeover Episode
2008-12-02
It's one of the most eagerly-anticipated events of every Biggest Loser season - the makeover episode! This season, the remaining five contestants are whisked away to New York City for amazing makeovers that will show how far they've really come in their weight-loss journeys. After getting new hairst...
E13
Final Four
2008-12-09
It's the last episode before the season finale, and time for the final four contestants to reflect on their weight loss journeys and the amazing progress they've made. They'll try on their former "big" clothes and watch highlight videos with their trainers showing just how far they've come. Then, in...
E14
Finale!
2008-12-16
In this season six finale, all eight teams of families will return for a special reunion and a chance to weigh in one last time and show America how much weight they've lost since the beginning of their weight-loss journeys. The transformations will be profound, not just for the finalists, but also ...

🎭 Cast of The Biggest Loser Season 6

Bob Harper
Bob Harper
Self
Alison Sweeney
Alison Sweeney
Self - Host
Jillian Michaels
Jillian Michaels
Self

📋 All Seasons of The Biggest Loser

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