The San Silvestre Vallecana is an annual 10 km road race held on 31 December in Madrid, Spain since 1964.

The race begins at Concha Espina street and concludes in Vallecas Stadium, with the course passing through some of Madrid's most iconic locations.

This version of the event emphasizes inclusivity and celebration, attracting thousands of runners who dress up in costumes and share the joy of the year's end.

[2] The San Silvestre Popular is celebrated as a family-friendly event, featuring vibrant music, cheering crowds, and an electric atmosphere.

Many participants join for fun rather than competition, creating a stark contrast to the elite race that occurs later the same evening.