Carrera Popular de la Antigua is an 8 km popular road race in Valladolid, Spain, with a morning start at 09:30. It is organized by C.D. Atletas Populares de Valladolid, so it reads as a local runners' event rather than a large commercial race.
The available race details point to a straightforward city run: 8,000 metres on the streets of Valladolid, scheduled on a Sunday morning. There is not enough reliable course information here to describe the route, landmarks, field size, or traditions without guessing.