The Cross San Silvestre Nava del Rey is a 6.8 km cross-country race starting and ending at Plaza España in Nava del Rey, Valladolid, Spain. This end-of-year event, held in late December, features athletics with a cross-country format.
The course begins and concludes in the town square, keeping the race focused within Nava del Rey. It is a well-attended, non-competitive fixture on Valladolid’s local running schedule, welcoming both casual participants and those aiming for personal bests. The town council is the organizer.