A 68-team NCAA men's basketball tournament bracket has finally been unveiled.

Following an eventful Selection Sunday, the path to a national championship has been set, with the country's top teams learning the road they'll have to traverse to make a Final Four and maybe, just maybe, cut down the nets on the first Monday of April and earn their one shining moment.

Not all roads to Indianapolis are created equally, though.

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For some teams, the mystical forces of March gift them a relatively navigable path. For others, though, tougher opponents or matchups stand in their way of the biggest stage in the sport.

So where do things stand for the NCAA tournament's four No. 1 seeds — Michigan, Duke, Arizona and Florida — and their title aspirations? Who will have to clear the highest hurdles just to make it to Naptown?

Here are the hardest roads to the Final Four:

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The Blue Devils earned the tournament's No. 1 overall seed after a 32-2 record and ACC regular-season and tournament titles, but they didn't get many other favors from the selection committee.

After an almost-certain first-round victory against college basketball legend Gerry McNamara and No. 16 seed Siena, coach Jon Scheyer's team has a taxing path to Indianapolis. In the second round, it will get either No. 8 seed Ohio State, who has one of the best players in the country in guard Bruce Thornton, or No. 9 seed TCU, which is 9-2 since Feb. 2.

In the Sweet 16, the Blue Devils will likely get No. 4 seed Kansas and potential No. 1 overall NBA Draft pick Darryn Peterson or No. 5 seed St. John's, which won the Big East regular-season and tournament championships, has won 19 of its past 20 games and has one of the best coaches in the sport's history in Rick Pitino.

Then, they'd have an Elite Eight matchup likely against No. 2 seed UConn, which has won two of the past three national titles, or No. 3 seed Michigan State, with Jeremy Fears Jr. and noted March wizard Tom Izzo. Even with likely national player of the year Cameron Boozer, Duke had enough questions with injuries to starters Caleb Foster and Patrick Ngongba. Now, it's got even more standing in the way of its national championship dreams.

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For all of their regular-season wins and overall success, the Wildcats have been among the biggest NCAA tournament underachievers under fifth-year head coach Tommy Lloyd, with no Elite Eight appearances despite being a No. 1 or No. 2 seed in three of the past four seasons. Even beyond that recent history, the path to their first Final Four in 25 years won't be easy.

A stiff challenge awaits in the Sweet 16 against either No. 4 seed Arkansas — the SEC tournament champion that has one of the country's best players in Darius Acuff Jr. and a long, athletic supporting cast — or No. 5 seed Wisconsin, which has won 15 of its past 20 and has one of the most explosive offenses in the sport.

After that, it would likely have to get through No. 2 seed Purdue, the Big Ten champion that has the nation's most efficient offense, according to KenPom, and a number of key players from its 2024 national runner-up squad, led by record-setting guard Braden Smith.

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The Gators enter the tournament as one of the country's hottest teams, with 17 wins in their past 19 games after an underwhelming 9-5 start. They've got all the potential to make a second-consecutive Final Four, with Sunday's bracket reveal confirming as much.

Either No. 8 seed Clemson or No. 9 seed Iowa could be a squirrely second-round opponent, but the Sweet 16 won't be nearly as daunting for Todd Golden's squad as it will for some of its fellow No. 1 seeds. No. 5 seed Vanderbilt beat Florida by 17 in the SEC tournament, but the Gators have shown they can beat the Commodores, with a 98-94 in Nashville back in January. Or they could take on No. 4 seed Nebraska, which is just 6-6 since a 20-0 start to the season. No. 2 seed Houston, a rematch of last year's national title game, or No. 3 seed Illinois would be challenging in the Elite Eight, but Florida's path to that point isn't especially arduous.

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There's no such thing as an easy road to the Final Four, but among the 1 seeds, the Wolverines have the most manageable set of tasks in front of them.

No. 8 seed Georgia or No. 9 seed Saint Louis could offer a fun second-round game, but neither squad has the horses to keep up with coach Dusty May's squad. In the Sweet 16, they'd probably get a beat-up No. 5 seed in Texas Tech without All-American forward JT Toppin or a No. 4 seed in Alabama that has a frontcourt so thin that it went to court to try to add a 23-year-old G Leaguer to it, making it a group that Yaxel Lendeborg, Aday Mara and Morez Johnson Jr. should feast against.

Then, in the Elite Eight, their most likely opponents would be No. 2 seed Iowa State, which is 11-7 in its past 18 games and has underplayed its tournament seed in recent years, or No. 3 seed Virginia, which has only one win this season against a team currently in the top 25 on KenPom.

It's fair to wonder whether Michigan can win a national title without injured guard L.J. Cason, but now that a bracket's out, a trip to Indianapolis should be much more of an expectation than a hope.

This article originally appeared on USA TODAY: March Madness predictions: Who has toughest Final Four road?