The La Palma race changes dates and features three trail distances alongside a demanding vertical climb.
The date is set, but the course, race distances and registration details have not yet been announced.
A popular race in southern Mallorca offers two distances, an afternoon start and an urban course.
The Madrid event combines mountain biking, off-road running and several race formats for adults and young athletes.
The event is scheduled for October, but the course, start time and registration details are still pending.
The date and town are confirmed, but the course, registration and use of proceeds are still unclear.
Two routes through Órzola’s trails, with night starts, required gear and practical details for planning the race.
Tremp has a date for its memorial race, but the start time, course and registration details are still unconfirmed.
The Albacete-area event returns on October 31; its recent history points to a well-attended day of popular racing.
A 10-kilometre road race connects two towns in the Deba valley on the afternoon of Oct. 31.
A morning of races for all ages coincides with Inca’s fairs and Halloween celebrations.
The Maresme event is scheduled for late October, although some course details have yet to be confirmed.