The main day of the festivities begins with religious services at the Real Colegiata de San Isidro, featuring a Solemn Mass. In the evening, a traditional procession featuring the images of the saint and Santa María de la Cabeza will traverse the historic center, accompanied by local bands. Meanwhile, the Pradera de San Isidro serves as the heart of popular culture, hosting parades of giants and big-heads, traditional food tastings, and children's entertainment.

Musical offerings are spread throughout the city, with highlights including performances at Jardines de las Vistillas and Plaza Mayor, where tributes to iconic Spanish music figures will take place. Matadero Madrid will also host a traditional 'verbena', while the night concludes at the Pradera with a professional fireworks display and a diverse lineup of musical acts ranging from rumba to urban rhythms.

To ensure a safe celebration, the Madrid City Council has deployed a special security plan, including 'Violet Points' for assistance in high-traffic areas such as Las Vistillas and Matadero. Additionally, public transport services have been reinforced, and accessibility measures for people with reduced mobility have been implemented across all festival venues.