Serra is set to host a demanding mountain event in February 2027; the route and registration details still need official confirmation.
The half marathon follows the old Urola railway line and shares its weekend with two other race distances.
Ceuta is preparing an edition with 6,000 entries, five events and a new allocation of places.
Carcastillo will host another trail event in February 2027, but key details about the route and registration are still pending.
The 10th edition offers three mountain options, with entry fees that vary according to the registration period.
Two days of trail running in Quiroga combine mountain routes, climbing and winter conditions in Galicia.
The Alicante winter trail takes place in February; here are the known details and what is still pending.
The Alicante event lists three options, but the course, start times and registration details are not yet available.
The Marines Viejo event has a confirmed date, but key route and registration details have yet to be announced.
The mountain race returns to Penedès in February, with a 20-kilometer distance linked to the UTMB Index.
Pedreguer will host its mountain race on Feb. 7, 2027, with several formats and a morning start.
Castelló will host its historic 21-kilometer race in January, with a morning start and a certified city course.