1909day.year

The first edition of the Giro d'Italia, a long-distance multiple-stage bicycle race, began in Milan; the Italian cyclist Luigi Ganna was the eventual winner.

The inaugural Giro d'Italia cycling race began in Milan, with Luigi Ganna claiming overall victory.
The first Giro d'Italia kicked off on May 13, 1909, organized by the Italian sports newspaper La Gazzetta dello Sport. The race featured eight stages covering more than 2,400 kilometers, challenging riders with mountain crossings and long flat stretches. Luigi Ganna emerged as the winner after enduring grueling daily distances and variable weather. The event drew large crowds along the route and captured the Italian public’s imagination. It established the Giro as one of cycling’s Grand Tours alongside the Tour de France. The success of the 1909 edition laid the foundation for what would become an annual sporting spectacle.
1909 The first edition Giro d'Italia stage Milan Luigi Ganna
1950day.year

The inaugural Formula One World Championship race takes place at Silverstone Circuit. The race was won by Giuseppe Farina, who would go on to become the inaugural champion that year.

On May 13, 1950, the first Formula One World Championship race was held at Silverstone Circuit, with Giuseppe Farina taking the win.
On May 13, 1950, Silverstone Circuit hosted the inaugural Formula One World Championship Grand Prix, marking the official start of F1 racing. Former Grand Prix champion Giuseppe Farina triumphed in his Alfa Romeo 158, edging out his teammate Luigi Fagioli. The high-speed track, built on a former RAF airfield, attracted thousands of spectators eager to witness the dawn of a new motorsport era. Officials introduced regulations on engine capacity and car weight to ensure competitive balance. Farina's victory set the tone for the season, in which he would become the championship's first titleholder. The event established traditions and standards that have defined Formula One racing ever since.
1950 inaugural Formula One Silverstone Circuit Giuseppe Farina champion
1990day.year

The Dinamo–Red Star riot took place at Maksimir Stadium in Zagreb, Croatia between the Bad Blue Boys (fans of Dinamo Zagreb) and the Delije (fans of Red Star Belgrade).

A deadly football riot broke out between Dinamo Zagreb and Red Star Belgrade fans at Zagreb's Maksimir Stadium.
On May 13, 1990, the rivalry between Dinamo Zagreb's Bad Blue Boys and Red Star's Delije exploded into violence at Zagreb's historic Maksimir Stadium.\nRioters clashed inside and around the stadium before a high-stakes Yugoslav Cup match, resulting in serious injuries and the match's abandonment.\nThe chaotic scenes foreshadowed the ethnic tensions that would soon engulf the Balkans.\nThis early outbreak of football hooliganism remains a stark reminder of how sport can ignite wider social unrest.
1990 Dinamo–Red Star riot Maksimir Stadium Zagreb Dinamo Zagreb Delije Red Star Belgrade
1995day.year

Alison Hargreaves, a 33-year-old British mother, becomes the first woman to ascend Everest without oxygen or the help of sherpas.

British mountaineer Alison Hargreaves summited Everest solo and without supplemental oxygen, becoming the first woman to achieve this feat without Sherpa support.
On May 13, 1995, Alison Hargreaves reached the summit of Mount Everest without Sherpa assistance or bottled oxygen.\nThe British climber had already conquered the six major Alpine north faces before setting her sights on the world's highest peak.\nHer solo ascent on Everest's perilous slopes set a new standard for female mountaineers.\nHargreaves' achievement challenged perceptions about gender and human endurance at extreme altitudes.\nTragically, she died later that year during a descent from K2, cementing her legacy as a fearless pioneer.
1995 Alison Hargreaves Everest