The San Silvestre Villarcayesa is a 5.200-meter popular race held in Villarcayo, Burgos, Castilla y León. This asphalt race has become a Christmas tradition in the town, offering an urban course designed to be accessible to runners of all levels. The race is known for its festive atmosphere and unique prizes, such as the winner's weight in blood sausage, which add a touch of humor and local flavor to the competition. Registration, which is usually free, is managed through the website of the Institute for Sport and Youth of the Provincial Council of Burgos, and it is advisable to register in advance due to demand.