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Which stadium is bigger, San Siro in Milan or the Stadio Olimpico in Rome?
Infrastructure and Public Buildings 1 April 2025

Which stadium is bigger, San Siro in Milan or the Stadio Olimpico in Rome?


The size of a stadium is measured by its capacity. The facilities in Rome and Milan differ in structure and layout: but which one is the largest?
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Nicola Teofilo

Journalist, external contributor of Immobiliare.it

San Siro in Milan and the Stadio Olimpico in Rome are among Italy’s most iconic football arenas, hosting epic triumphs and crushing defeats, legendary concerts, and packed crowds for major events.

More than just playing fields, they stand as cathedrals of sport, symbols of historical and architectural grandeur. But between the two, which is the largest? One holds the title of Italy’s biggest stadium. Let’s take a closer look at what makes them unique.

How big is San Siro Stadium?

The Giuseppe Meazza Stadium, commonly known as San Siro, is one of the most iconic football venues in the world. Inaugurated in 1926 and gradually expanded over the years, it has become the temple of Milanese football, serving as the home ground for both AC Milan and Inter Milan.

The pitch measures 105 metres in length and 68 metres in width, dimensions that adhere to standard regulations for football stadiums. However, what truly sets San Siro apart is its impressive capacity.

Over the years, the stadium has undergone several renovations, including the addition of a third tier in 1990 ahead of the World Cup, further increasing its seating capacity.

How big is Rome’s Stadio Olimpico?

Construction of the stadium began in 1928, and it retained its original name until its inauguration in 1953, when it was renamed Stadio dei Centomila. The turning point came a few years later with the lighting of the Olympic torch for the Rome 1960 Games. From that moment, it became widely known as Stadio Olimpico, a venue for major national and international events.

Today, the stadium has the same dimensions as San Siro, measuring 105 metres in length and 68 metres in width. Over the years, Stadio Olimpico has undergone several renovations, the most recent ahead of the Jubilee of 2000, further enhancing the spectator experience.

San Siro vs Olimpico: which stadium is bigger?

Is the stadium in Rome or Milan larger? It depends. From the outside, San Siro and the Olimpico feature distinct architectural designs, but the true measure of a stadium’s size is its spectator capacity.

In this showdown between Rome and Milan, the pitch dimensions are identical. However, when comparing figures, there is no doubt that San Siro takes the lead in terms of capacity. Here’s how the two stadiums compare:

San Siro Stadium (Milan)

Stadio Olimpico (Rome)

If we compare the overall structure of both stadiums, their footprints are quite similar:

What is the largest stadium in Italy?

While both stadiums share the same pitch size, San Siro claims the title for the highest spectator capacity, not just against the Olimpico but across all Italian stadiums.

Rome’s Olimpico follows in second place, while Renzo Piano’s futuristic “spaceship” in Bari completes the podium, ranking ahead of Naples’ Maradona Stadium, which has a capacity of 58,270 seats.

Article translated by Agnese Giardini

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