San Silvestre Vallecana in Madrid
Madrid's ten-kilometre New Year's Eve road race, run since 1964, combines an elite international field chasing genuine competitive times with tens of thousands of costumed amateur runners on the same course. Its late-afternoon finish leaves time to join the city's New Year celebrations, making it a fixture of Spanish holiday culture well beyond competitive athletics.
Madrid empties its streets around the Vallecas district each New Year's Eve for a ten-kilometre road race that began in 1964 as a modest neighbourhood event and has grown into one of the largest and most internationally competitive road races held anywhere on December 31.