🆓 Best Free March Madness Bracket Contests, Challenges 2026: Millions in Bonues

Selection Sunday is on deck with several teams already claiming their entry into the 2026 NCAA Tournament via conference tournament play. Once the field is set and the bracket is unveiled on Sunday evening, college basketball fans can immediately turn their attention toward free March Madness bracket contests for the chance to win millions in prize money via our best March Madness betting sites.

🆓 Free 2026 March Madness bracket contests

Once you have your March Madness bracket complete, it will be time to test your picks and March Madness bracket predictions against FREE bracket challenges and contests from our best sports betting sites.

Here were the available March Madness bracket challenges and contests last year. All of contests listed below were FREE to enter ahead of the NCAA Tournament, and we expect a similar prize structure for the 2026 NCAA Tournament to be unveiled as soon as soon as Sunday night, and through the coming week.

Be sure to keep an eye on the March Madness betting promos for added bonuses throughout the tournament.

(Not available to residents of Ontario)

FanDuel Tourney Shuffle

FanDuel's 2025 Tourney Shuffle'Em allowed users to predict the last four teams in the NCAA Tournament. Participants are given a virtual card with a random four-team combination and can shuffle up to 20 times to create their preferred Final Four lineup.

If any participant ends up with the perfect four-team combination, they earn a share of the $100,000 prize.

bet365 Bracket Challenge 2026: Win $10 million for a perfect bracket

bet365's perfect bracket challenge had a $10 million prize to whoever completes a perfect bracket.

Alternatively, the contestant with the most points at the end of the NCAA Tournament will win $100,000. Additional prizes are available for the top 5,000 brackets.

Enter today via bet365 bonus code "SBRBONUS".

DraftKings Zero Right Bracket Challenge 2025

DraftKings had a special spin on a 2026 bracket challenge. The DraftKings Zero Right Bracket Challenge, presented by Pepsi Zero Sugar, gives users a chance at $100,000 for a perfectly imperfect bracket. You just have to be sure to get zero picks correct in Round 1.

This contest opened on Tuesday, March 18 and was available for all U.S. residents with a valid DraftKings account. All you need to do is pick the loser of every game. The first 125,000 entrants will receive a digital code for one 20oz or 28oz can of select Pepsi Zero Sugar products.

There's no DraftKings promo code needed!

Caesars' Bet the Tournament Fan Cave Frenzy

Caesars offered two VIP Fan Cave experiences with a value of $2,500 each. One is awarded to the participant with the most tier credits during the promotion period, and the other is awarded in a random draw of participants with a minimum of 1,500 tier credits.

This contest was free to Caesars users, but be sure to opt-in to register. The promo runs from March 1 through March 30. Rewards are earned by placing wagers on Caesars Sportsbook or via casino games.

Use Caesars promo code "SBRBONUSDYW" to get started.

🛍️ March Madness betting promos

March Madness betting promos are special offers and incentives that sportsbooks provide during the NCAA Tournament to attract bettors and enhance their betting experience.

These promotions can take various forms, including deposit bonuses, first bet offer, odds boosts, and special contests or tournaments. Sportsbooks may offer increased odds on select games or players, allowing bettors to potentially earn higher payouts on their wagers.

Deposit bonuses are a common type of March Madness betting promo, with sportsbooks offering to match a percentage of a bettor's initial deposit up to a certain amount. First bet offer provide bettors with an opportunity to place a wager without risking their own money, and the wagers are often given as a reward for making a qualifying bet or deposit.

Additionally, March Madness betting sites may run special contests or tournaments during March Madness, such as bracket challenges or pick'em competitions that allow bettors to compete against each other for prizes.

March Madness betting promos are designed to add excitement and value to the tournament for bettors, incentivizing them to place more bets and engage with the event.

These promotions can vary widely between sportsbooks, so bettors should shop around to find the best offers and take advantage of any opportunities to maximize their betting potential during March Madness. See our best sportsbook promos and March Madness betting promos here.