Around Valladolid in detail
Buses and trains between Zamora and Valladolid stop in Tordesillas and Toro. Most buses between Valladolid and León stop in Medina de Rioseco.
If you're driving, both Tordesillas and Toro lie just south of the A11/E82. For Medina and Rioseco, take the A60 and then the N601 northwest of Valladolid.