Find the best calendar of popular races, marathons, half marathons, and 10K events. Dates, registrations, and all the details for your big challenge, right here.

Mud, carries and obstacles await participants in a seven-kilometre race scheduled for March 2027.

Nava will host a mountain-running event in March 2027, with trail running, speed trail and Nordic walking; some details are still pending.

The race returns to Ullastrell in March, although start times, registration and the course are still to be confirmed.

Villa de Vallecas is set to host its fifth duathlon in March 2027, while some sporting and logistical details remain unconfirmed.

Fuentidueña de Tajo is set to host the race on March 14, 2027; route and registration details are still pending.

The Murcia race is listed for March, but practical details for the next edition are still pending.

Barcelona is preparing its March marathon with more places, rising international interest and a 48th edition on the calendar.

Porcuna will host another edition of its popular race in March 2027, though start times and course details have yet to be released.

Caravaca will host a mountain event in March 2027, with routes for runners and hikers.

Cártama’s mountain race now has a confirmed date, but key details about the next edition have yet to be released.

Nuño Gómez will host the fifth edition on March 13; the distance and other course details have yet to be confirmed.

The Les Useres race returns in March 2027; its route and registration details have not yet been announced.