San Silvestre de Alcorcón 2026 moves to a new area and time

The San Silvestre de Alcorcón 2026 takes place on Saturday 12 December 2026 from 18:30, in the afternoon for the first time, and moves to the Los Castillos neighbourhood. Almost 2,000 athletes are expected, with 1,200 bib numbers available for adults and 810 people registered in the first month, according to Club Atletismo Alcorcón president Juan Carlos Barrero.

The event is organised by Club Atletismo Alcorcón and the town council. Mayor Candelaria Testa explained that the move to Saturday afternoon was made at the request of younger residents, while the change of location is part of the council’s aim to spread activities across the neighbourhoods.

5 km and 10 km route

The urban course will run through Los Castillos and cover 5 kilometres; those taking part in the 10-kilometre race will complete two laps. The start and finish will be in Parque de Los Castillos, on avenida de la Libertad.

The route is almost flat, at an altitude of between 683 and 696 metres, and will be overseen by judges from the Federación de Atletismo de Madrid. The race is chip-timed. The 10-kilometre distance can be used to provide proof of time for the San Silvestre Vallecana 2026.

Participants will have 1 hour and 30 minutes to complete either distance. After that, the route will reopen to traffic. The main race is open to men and women who are at least 16 years old on race day.

Children’s races and party

The children’s races will start from 17:00 on a traffic-free circuit, with the start and finish at los Castillos de Alcorcón. They will be non-competitive events: participants will receive a commemorative medal, but not a T-shirt.

The day will end with a party with music from a DJ.

Registration and bib collection

Registration will close at 23:59 on 10 December, or earlier if all bib numbers are taken. If places remain, registration will also be available during bib collection, at a cost of 17 euros for the 5 km and 10 km races and 4 euros for the children’s races. Registration for the latter is also available on race day.

Bib collection will take place at Los Castillos de San José de Valderas, on calle Los Lirios, on Friday 11 December from 17:00 to 20:00 and Saturday 12 December from 15:00 to 17:30. To collect a bib, participants must present their receipt or a copy of their registration, and their DNI, passport or another official identity document. Information is available on the official race website.