Terra de Gigantes is an ultramarathon with a maximum completion time of 74 hours. The 303km and 11,220 D+ of the route must be covered self-sufficiently between the life bases stipulated by the organization and guided solely by GPS.
Demanding!
That's how we define this mix of everything you might encounter on a distance that crosses a country from east to west: technical trails, forest paths, roads, asphalt, long climbs, painful descents, cold, fog, maybe rain or even snow.
It's a difficult route and can be extreme if the weather conditions are adverse. Very low temperatures, strong winds at the highest points and permanent rain can take the challenge to an extreme level.