bet365 Bracket Challenge: Compete for $10 Million During March Madness

Dylan Wilkerson Sports Betting Expert

9 minute read

The madness is officially here. As the 2025/26 NCAA Men’s Basketball Tournament tips off, bet365 is raising the stakes with the return of its massive $10 Million Bracket Challenge. Whether you’re a seasoned bracketologist or just looking for a sweat, this free-to-play contest offers one of the biggest prize pools in the industry.

Beyond the bracket, new users can also capitalize on an exclusive tournament sign-up offer using our bet365 bonus code: Bet $10, Get $365 in Bonus Bets Win or Lose!

Click the module below to sign up with bet365 and join the $10 Million Bracket Challenge and claim up $365 in bonus bets!

Updated on 3/18/26

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Bet $10, Get $365 in Bonus Bets Win or Lose!

Bonus Code

VIBONUS

Click to Apply Code!

Deposit required. Paid in Bonus Bets. Bonus Bets wager excluded from returns. New customers only. T&Cs, time limits, and exclusions apply. Not available in Illinois.

The $10 Million Bracket Challenge: How to Play

The bet365 Bracket Challenge is a free-to-play predictor game that tasks fans with a simple (yet nearly impossible) goal: predict a perfect bracket.

• The Jackpot: A perfect bracket takes home the $10,000,000 jackpot.
• Leaderboard Prizes: Even if your bracket isn’t perfect, you can still win. There is a $100,000 guaranteed prize for the top finisher on the leaderboard, with additional prizes awarded to the top 5,000 participants.
• One Entry Per Person: Every eligible customer gets one shot at the $10 million prize.

VegasInsider Tip: Brackets usually lock before the first full round of games begins on Thursday. Ensure your entry is submitted and verified well before the tip-off of the first Round of 64 game.

Exclusive bet365 March Madness Bonus: Bet $10, Get $365

If you are new to bet365, the tournament is the perfect time to build your bankroll. While the Bracket Challenge is free, bet365 is also offering a "Bet and Get" promotion for the first round.

How to claim your $365 Bonus:

1. Sign Up: Create a new account at bet365 by clicking here.
2. Deposit: Make a minimum qualifying deposit of $10.
3. Wager: Place a $10 bet on any March Madness market (spread, moneyline, or total) with odds of -500 or greater.
4. Get Bonus: Once your bet settles, $365 in bonus bets will be added to your account, regardless of whether your initial wager wins or loses.

Where is bet365 Legal?

You must be 21+ and physically located in one of the following states to participate in the Bracket Challenge and claim the sign-up bonus:

• Arizona, Colorado, Illinois, Indiana, Iowa, Kansas, Kentucky, Louisiana, Maryland, Missouri, New Jersey, North Carolina, Ohio, Pennsylvania, Tennessee, and Virginia.

VegasInsider Verdict: Why bet365 for March Madness?

At VegasInsider, we look for value and user experience. bet365 stands out during the NCAA Tournament for three reasons:

1. Early Payout Offers: If the team you bet on goes up by 15 or 18 points (depending on the promo), bet365 will settle your bet as a winner instantly, even if they eventually lose the game.
2. Competitive Odds: They consistently offer some of the best lines on underdogs, which is crucial during a tournament known for upsets.
3. The Free-to-Play Factor: The $10M Bracket Challenge is a "no-risk, high-reward" addition to your betting portfolio.
4. BetSync: If you use the Action Network App (our favorite sports betting tracking app) your bets will INSTANTLY sync.

Always gamble responsibly. If you or someone you know has a gambling problem, call 1-800-GAMBLER.

Dylan Wilkerson

Dylan Wilkerson has over 5 years of experience reporting and analyzing the sports betting industry for various sites. His portfolio includes work for SportsHandle and Action Network, in addition to VegasInsider. His favorite sports are the NFL, College Football, The PGA Tour, the LIV Tour, and Cricket. Dylan has a broad and deep understanding of various sports-related topics. More from Dylan Wilkerson