San Agustín del Guadalix will host two days of obstacle racing, with Sprint, Super, Beast and Kids Race announced.
Salou opens a triathlon weekend on May 8 with sprint and Olympic races, relays and separate registration conditions.
Salou’s main triathlon switches to 100 kilometres, with relay entries and family running events across the weekend.
Two distances and a finish at Plaza del Pilar: the available details for Zaragoza’s April 18 race day.
Donostia races on April 4, with two distances and entry, start-time and course details still awaiting confirmation.
Huelva's December 30 race offers three distances, entries from €3 and start times that remain provisional.
Velilla's charity race has a confirmed date and two distances, but start times, fees and course details remain unavailable.
An October road race links Carabanchel's upper district with Puente de Toledo, offering a downhill course and two entry options.
An October afternoon in Aranda brings together young runners, experienced athletes and a town out to watch.
Thousands of runners, two distances, and a morning start on an urban route designed for all paces.
Alcázar de San Juan will bring together a half marathon, 10K, and a charity 6K in an event marked by the memorial and local participation.
Date, route, and key details of the Villanueva de la Torre rural race, with useful information and context.