San Silvestre Alameña is an 8K road race held in El Álamo, a town in the Madrid region of Spain. It takes place in late December, forming part of the Spanish San Silvestre tradition of end-of-year races. The course is an urban circuit, with the start and finish located in Plaza de la Constitución, indicating a town-center route.
The event features the main San Silvestre race alongside children's races, positioning it as a community gathering rather than solely a competition for runners. Previous editions have offered chip timing, a runner's bag, and a gift raffle. The race has been held for at least fourteen editions, and the Ayuntamiento de El Álamo has organized it in the past.