Euros explained: the format, the groups and the knockout rounds

Almost every question about the Euros comes from the same place: people assume it works like the World Cup, and it does not. Both are national-team tournaments played every four years, and the resemblance holds that far. After that, every rule that matters diverges, and it diverges precisely where a result changes hands: how you get in, who goes through in third, and what happens when two teams finish level. This guide walks the format in the order it reaches anyone following along, from the qualifiers to the last penalty.

Getting in: the groups and the door nobody expects

The European Qualifiers are the simple part. More than fifty federations are split into groups, play home and away, and the top two in each group go straight to the final tournament. No surprises so far. The surprise is what happens to the places left over, and it is where intuition betrays almost everyone: they do not come from a repechage among the best third-placed teams, which would be the obvious design, but from an entirely different competition.

The alternative route is built out of the Nations League. Teams that did well there and failed to qualify through their group enter a playoff of their own, contested in brackets of four, with a semi-final and a final in a single match, each bracket delivering one place. The practical consequence is counterintuitive and worth spelling out: a team can finish fourth in its qualifying group and still reach the Euros, while another that finished third stays home. What decides it is not the qualifying position, but the earlier showing in the Nations League.

That is where the answer lies to a question many people ask without finding an explanation: why the Nations League stopped feeling like a friendly. It became a door. A June fixture that used to count for nothing now determines who gets a second chance two years later, and it is the only formal link between two separate competitions in the European calendar.

On the host, another assumption needs unpicking. There is no fixed rule granting the host an automatic place: it depends on whether the tournament has one venue country or several. When the Euros are spread across many countries, UEFA has chosen to grant no automatic place at all, because it would take too many places away from the pitch. With a single host, the automatic berth is the norm. It is a decision taken per edition, not a permanent clause.

Twenty-four teams, and the problem they created

The final tournament brings together twenty-four teams in six groups of four. The top two in each group advance, which makes twelve, leaving four short of a round of sixteen. Those four come from the six third-placed teams, compared against one another. It is worth understanding where this engineering came from: with sixteen teams there were no six groups and the arithmetic closed by itself. Expanding to twenty-four without changing the number of stages left UEFA with six third-placed sides chasing four places, and it needed a criterion to rank them.

That ranking uses points first, then goal difference, then goals scored. And here is what makes the final round of group games so strange to watch: a team can be sitting down, its own games already played, and see its fate decided by a match between two other sides, in another group, hundreds of kilometres away. There is nothing it can do. Finishing third on a given points total qualifies in one edition and eliminates in another, because what counts is the comparison with the other groups' third-placed teams, not a fixed threshold.

The tiebreaker inside a group differs from the World Cup in a way that decides places and goes unnoticed. UEFA starts with the head-to-head record: if two teams are level on points, you look first at the match between them. FIFA starts with overall goal difference. Picture two teams level on points, one with the better difference across the whole group and the other having won the meeting between them. At a World Cup the goal-difference team goes through; at the Euros the one that won the duel does. Same tie, different qualifiers, and the only variable is which body runs the tournament.

The knockout, and the two absences that define the tournament

From the round of sixteen onwards everything is a single match. A draw in normal time leads to thirty minutes of extra time, in two halves of fifteen, and if the deadlock holds the place is settled on penalties. There is no second leg at any stage of the final tournament, and that changes the nature of the competition in a way anyone used to club football feels immediately: there is no week in which to correct course, and no managing a result with the next leg in mind. UEFA has also abolished the away goals rule across its competitions, which only bites in the two-legged qualifying playoff, since the final tournament has none.

Two absences define the Euros as much as their rules do. The first is the third-place playoff, abolished decades ago: the two beaten semi-finalists finish level in third and go home without another match, something the World Cup still stages. The second matters more to anyone looking for consequence: being European champion brings no World Cup place and no automatic entry to any other national-team tournament. What the title guarantees is one match, the Finalíssima, against South America's champion, played as a single game between the two continents.