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.

Two distances, a start near the Water Tower and tiered entry fees for Zaragoza’s January race.

The Sierra de Cádiz town will welcome runners and walkers for an event featuring new formats and races for younger participants.

The Tenerife event will take place in January over five kilometers, with its start time and location now published.

Ultramediterrània 2027 in Alcoi, 21 to 24 January: PRO 160K, ONE 86K, MAX 50K, EXP 25K, CXM 14K and VRT 6K, with start times and rules.

Barxeta hosts this trail race on Jan. 17, 2027, with a scheduled 7 a.m. start from the town centre.

Alicún will host another edition of its mountain race, featuring a circular course and a parallel hiking route.

An 86-kilometer winter ultra links Gorga and Alcoi across trails, ridges and demanding climbs.

Three distances, staggered starts and a race day on the Japanese island of Ishigaki.

The event already has a date and location for 2027, but its route and race formats are still to be confirmed.

Two distances, a start in Plaza Grande and a mountain course: confirmed details and information still to come.

León will kick off the year’s trail calendar with a winter race whose date is now set.

A 26-kilometre race links several towns in Seville province in one of January’s popular events.