Football's biggest tournament has never looked like this. When Mexico kick off against the field at Mexico City's Estadio Azteca on 11 June, they will start the first 48-team World Cup — a tournament stretched to 104 matches across 16 cities in three countries over 39 days, ending at MetLife Stadium in New Jersey on 19 July. It is the first change to the World Cup's shape since the field grew to 32 in 1998, and it rewrites the arithmetic of winning. Here is what actually changes, who starts in front, and what hangs over the whole thing.

How is this World Cup different from every one before it?

The headline is size: 48 teams, up from 32, split into 12 groups of four. The top two from each group plus the eight best third-placed sides advance to a brand-new round of 32. That inflates the schedule from 64 matches to 104, and lengthens the tournament to 39 days. Crucially, it changes the road to the trophy — a champion now has to win eight knockout-inclusive matches, not seven. FIFA president Gianni Infantino called the 2026 edition "groundbreaking," and structurally it is: more entrants, more games, more rest-and-rotation calculus, and a longer war of attrition than any World Cup squad has faced before.

Metric32-team era2026
Teams3248
Matches64104
Groups8 of 412 of 4
Tournament length32 days (2018)39 days
Matches to lift the trophy78
Performance prize poolUS$440m (2022)US$655m

Who are the favourites — and why is the field so open?

For once, no one runs away with it on paper. ESPN's market has Spain (+450) narrowly ahead of France (+475), then England (+700), Portugal (+850), defending champions Argentina (+900) and Brazil (+950) — with Spain and France "beginning to separate" from the chasing pack. Prediction models tell the same story of parity: Nate Silver's PELE model puts France and Spain as co-favourites at only "around 16 percent" each, leaving the rest of the probability spread thin across half a dozen contenders. As the model's write-up notes, there is "an especially large amount of parity," and historically "the World Cup hasn't been particularly kind to favorites" — a warning for anyone treating Spain or France as inevitable.

Where is it being played, and why does geography matter?

The tournament sprawls across 11 US cities, three in Mexico and two in Canada. That geography is itself a storyline. Mexico's Estadio Azteca opens proceedings and becomes the first stadium to host or co-host three World Cups (1970, 1986, 2026); the 94,000-seat AT&T Stadium in Dallas is the largest venue; the final lands at MetLife. But spreading 48 teams across a continent means long-haul travel between group games, wild swings in altitude — Mexico City sits above 2,200 metres — and, in several host cities, brutal early-summer heat. Where a squad is based, and how far it has to fly, may shape this World Cup as much as form.

What is the money at stake?

A record one. FIFA approved a performance prize pool of US$655 million — a 50% jump on the US$440 million paid at Qatar 2022 — with US$50 million to the winners and a guaranteed US$10.5 million for every qualified nation (including US$1.5m in preparation costs). Infantino framed it as "groundbreaking in terms of its financial contribution to the global football community." The expanded field is not only a sporting experiment; it is a commercial one, funnelling far more money to more federations than any previous edition — part of the case FIFA makes for growing the tournament in the first place.

What concerns hang over the tournament?

Three, mainly. Heat: researchers at Queen's University Belfast warned that wet-bulb temperatures in some host cities exceed the levels that pushed Qatar 2022 to winter, and a May 2026 open letter via the New Weather Institute, signed by dozens of players, demanded stronger heat protocols after the 2025 Club World Cup saw on-field temperatures of 90–102°F (32–39°C). Cost: FIFA's move to dynamic pricing pushed some seats to extremes — a single final ticket has been listed at US$11,000 — prompting USMNT's Timothy Weah to call tickets "too expensive." Carbon: analysts estimate the expanded, fly-everywhere format will generate emissions almost double the average of the last four tournaments (Qatar 2022 alone was put at roughly 5.25 million metric tonnes). The football starts on 11 June; so does the argument over whether bigger is better.