A May 22 race in Colònia de Sant Jordi combines a 1.5 km swim, 40 km bike ride and 10 km run, starting at 10 a.m.
Four distances, tiered entry fees and a children's race feature in the May event in the Basque capital.
Two race days, a 100-kilometre format and category-specific entry fees shape the next edition of Mogán’s triathlon.
Cartagena hosts a half marathon and 10K on March 7, with a 9:30 a.m. start and a certified half marathon course.
Getxo races on April 4, with three distances, a Fadura start and a course designed for running without major hills.
The León event is confirmed for April 4 with four race options, though some registration details still need clarification.
Two distances, separate start times and no Sunday bib collection: the key details for Zaragoza's March race.
Bilbao races on March 6, with tiered entry fees, a minimum age of 16 and a certified course.
Three distances are scheduled for February 2027, with marathon fees published and other race details still pending.
The San Sebastián event features a 5K, a mass-participation 10K and a sub-45 race beside Zurriola beach.
El Puerto adds a 10K to its January event, with a confirmed date, planned course changes and announced runner services.
Donostia’s December 31 race lists 7.9 kilometers and a 2 p.m. start, with entry and course details still to be confirmed.