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.

The festive race in El Vendrell has a date and distance, but practical details are still pending.

The Madrid-area race is set for Dec. 26; its published distance is about five kilometers.

Five kilometres, a 10 a.m. start and two different fees listed for registration.

The Castellón event offers a December trail marathon; several route and organizer details have yet to be published.

The Christmas race is scheduled for Dec. 26, but several details of this edition have yet to be confirmed.

The Dec. 26 event has a confirmed date and location; the 2026 course and registration details are still pending.

The Soria event offers trail, walking and children’s race options on a December morning.

Benicàssim has set a date for its next New Year’s Eve race, but start times and registration details have yet to be announced.

Rota is set to host a five-kilometre holiday race; the course and start time have not yet been announced.

El Masnou will hold its traditional holiday race on December 26, with a 5K and children’s races.

Cieza hosts two urban race distances in November, with a morning start, a riverside course and useful details for runners.

A December road race in Colunga: 7.1 kilometers, darkness and a headlamp as essential parts of the experience.